Warrant officer (United States)
In the United States Armed Forces, the ranks of warrant officer (grades W‑1 to W‑5; see NATO: WO1–WO5) are rated as officers above the senior-most enlisted ranks, including all candidates, and cadets and midshipmen, but subordinate to the officer grade of O‑1 (NATO: OF‑1). This application differs from the Commonwealth of Nations and other militaries, where warrant officers are the most senior of the other ranks (NATO: OR‑8 and OR‑9), equivalent to the US Armed Forces grades of E‑8 and E‑9.
Warrant officers are highly skilled, single-track specialty officers, and while the ranks are authorized by Congress, each branch of the uniformed services selects, manages, and uses warrant officers in slightly different ways. For appointment to warrant officer one (WO‑1), a warrant is approved by the secretary of the respective service. For chief warrant officer ranks (CW‑2 to CW‑5), warrant officers are commissioned by the President of the United States and take the same oath as regular commissioned officers (O‑1 to O‑10).
Warrant officers can and do command detachments, units, activities, vessels, aircraft, and armored vehicles, as well as lead, coach, train, and counsel subordinates. However, the warrant officer's primary task as a leader is to serve as a technical expert, providing valuable skills, guidance, and expertise to commanders and organizations in their particular field.
- 1 Army
- 2 Marine Corps
- 3 Navy
- 4 Air Force
- 5 Coast Guard
- 6 Public Health Service Commissioned Corps
- 7 United States Maritime Service
- 8 Notable warrant officers
- 9 See also
- 10 Notes
- 11 References
- 12 Further reading
- 13 External links
The Army warrant officer traces lineage to 1896 with the War Department's creation of civilian Headquarters Clerks and Pay Clerks. In 1916, an Army Judge Advocate General review determined that field clerks should be members of the military. Legislation in 1916 authorized those positions as military rather than civilian and created the ranks of Army Field Clerk (the former rank of Headquarters Clerk) and Quarter Master Corps Field Clerk (the former rank of Pay Clerk). In July, 1917, all Field Clerks were considered enlisted and were assigned an enlisted uniform. Their branch insignia was two crossed quill pens (worn on a disk pin on the left side of the standing collar and a freework insignia on the visored cap).
In December 19, 1917, Special Regulation 41 stated that the Army Field Clerk and Quarter Master Corps Field Clerk ranks were authorized the same uniform as an officer. Their rank insignia was now a freework pin of crossed quill pens on either side of the freework "U.S." pins worn on the standing collar of the M1909 tunic. They were not permitted the brown mohair cuff braid band of an Army officer, but were authorized a silver-and-black braid hatcord for wear with the M1911 Campaign Hat and the officer's "G.I. Eagle" on the M1902 peaked cap.
On 9 July 1918, Congress established the rank and grade of warrant officer concurrent with establishing the Army Mine Planter Service (AMPS) within the Coast Artillery Corps. Creation of the Mine Planter Service replaced an informal service crewed by civilians, replacing them with military personnel, of whom the vessel's master, mates, chief engineer, and assistant engineers were Army warrant officers. Warrant officer rank was indicated by rings of brown cord worn on the lower sleeve of the uniform jacket: two for 2nd Mate and 2nd Assistant Engineer, three for 1st Mate and Assistant Engineer, and four for Ship's Master and Chief Engineer.
Since that time, the position of warrant officer in the Army has been refined. On August 21, 1941, under Pub.L. 77–230, Congress authorized two grades: warrant officer (junior grade) and chief warrant officer. In 1942, temporary appointments in about 40 occupational areas were made. The insignia for warrant officer (junior grade) was a gold bar 3⁄8 inch (0.95 cm) wide and 1 inch (2.5 cm) long, rounded at the ends with brown enamel on top and a latitudinal center of gold 1/ (0.32 cm) inch wide. The insignia for chief warrant officer was a gold bar 3⁄8 inch (0.95 cm) in width and 1 inch (2.5 cm) in length with rounded ends, brown enamel on top with a longitudinal center stripe of gold 1⁄8 inch (0.32 cm) wide. The brown enamel backing of the warrant officer insignia was based on the color of the sleeve insignia of rank for ship's officers of the AMPS.
On July 18, 1942 Pub.L. 77–658, the Flight Officer Act, was enacted, creating the rank of flight officer, equivalent to warrant officer (junior grade) and assigned to the U.S. Army Air Forces (USAAF). Insignia was the same as for a warrant officer (junior grade), except the backing was in blue enamel rather than brown. Most flight officers were graduates of various USAAF flight-training programs, including power and glider pilots, and navigator and bombardier ratings. Graduates were appointed to the rating of flight officer, but some of each graduating class were commissioned as second lieutenants. Once reaching operational units and after gaining flying experience, flight officers were later offered direct commissions as lieutenants.
Flight sergeants, who were assigned as transport and glider pilots, were appointed as flight officers when the new rank was created. Some of the first eligible flight officers were Americans who had served as sergeant pilots in the Royal Air Force and who transferred to the USAAF after the U.S. entered the war.
In November 1942, the War Department defined the rank order as having warrant officers above all enlisted grades and below all commissioned grades. In March 1944, the first six women were appointed to the warrant officer grades as Band Leaders and administrative specialists.
In 1947, legislation was sought to introduce four grades of warrant officers. Proposed rank titles were: chief warrant officer, senior warrant officer, warrant officer first class, and warrant officer.
In 1949, Pub.L. 81–351, the Career Compensation Act, created four pay grades, W-1 through W-4, for all the armed services. The two warrant ranks were unchanged, but warrant officer (junior grade) was pay grade W-1, while chief warrant officer started at W-2 and could advance to W-3 and -4.
In late 1949, the Warrant Officer Flight Program was created, which trained thousands of warrant officer pilots. The personnel were to be trained by the US Air Force, but controlled by the US Army Transportation Corps. The first helicopter pilot class was 51A (April 1951 to December 1951), which was trained to fly H-19 Chickasaws. The program was temporarily cancelled in 1959 due to military budget cuts, but was reinstated in 1963 to meet the increased demand.
In 1954, the Warrant Officer Act, Pub.L. 83–379, created separate ranks for each pay grade, W-1 through W-4. On September 10, 1956, AR 670-5 authorized the approved insignia for the new ranks that consisted of a metal frame around a brown enamel bar. The insignia for Warrant Officer 1 (Grade W-1) and Chief Warrant Officer 2 (Grade W-2) was a gold metal frame with one or two horizontal metal bands across it. Chief Warrant Officer 3 and Chief Warrant Officer 4 had a silver frame with one or two horizontal bands across it.
Due to the demand for helicopter pilots in Vietnam, the number of warrant officer pilots grew from about 2,960 in 1966 to more than 12,000 by 1970. In 1973, a reduction in force began and chief warrant officer helicopter pilots were offered promotion to the rank of first lieutenant to retain combat veterans.
On June 10, 1970, the Army adopted a redesigned warrant officer insignia that was easier to identify. It was a silver bar with one to four black enamel squares on it (one per level of rank). "In July 1972, Army Warrant Officers began wearing the newly designed silver rank insignia, with black squares..."
In April 8, 1988, the rank of Master Warrant Officer (MW4) was created in the grade of W-4. Candidates were drawn from Chief Warrant Officer 4s (CW4) who had attended a special course at the Warrant Officer school at Fort Rucker. The first class graduated in December 8, 1988. The Warrant Officer Management Act Pub.L. 102–190 of December 5, 1991, created the paygrade of W5 and the separate rank of Master Warrant Officer (CW5), since renamed as Chief Warrant Officer Five.
On July 9, 2004 the Warrant Officer Branch insignia (also known as the "Eagle Rising" or "Squashed Bug") was discontinued. The warrant officer's branch of assignment will now be worn instead.
Mission and use
Army warrant officers are technical experts, combat leaders, trainers, and advisors. They serve in 17 branches and 67 warrant officer specialties, spanning the Active Component (i.e., Regular Army), the Army National Guard, and the U.S. Army Reserve. Warrant officers command the Army's waterborne and seagoing vessels, most Army bands, and as aircraft commanders of most Army Aviation aircraft. In addition, they may be found in command of various small units and detached teams.
The Army uses warrant officers to serve in specific positions which require greater longevity than the billet duration of commanders and other staff officers. The duration of these assignments results in increased technical expertise, as well as increased leadership and management skills.
Regardless of rank, Army warrant officers are officially addressed as Mister (Mrs., Miss, Ms.).
British forces who work with the U.S. Army often call chief warrant officers "CWO", as British forces usually abbreviate ranks.
The body of warrant officers in the Army is composed of two communities: technicians and aviators. Technicians typically must be sergeants (E-5, 'NATO: OR-5) or above in a related specialty to qualify to become a warrant officer. A waiver may be granted on a case-by-case basis if the applicant has comparable experience in the government service or the civilian sector. The aviation field is open to all applicants, military or civilian, who meet the stringent medical and aptitude requirements.
After selection to the warrant officer program, candidates attend Warrant Officer Candidate School (WOCS), which is developed and administered by the Warrant Officer Career College (USAWOCC) at Fort Rucker, Alabama. Army candidates on active duty must attend the course at Fort Rucker. Candidates in the United States National Guard attend the course either at Fort Rucker, or one of the National Guard's Regional Training Institutes. After graduation, all candidates are promoted to warrant officers (WO1). Technicians attend training at their respective branch's warrant officer basic course (WOBC), where they study advanced subjects in their technical area before moving on to their assignments in the Army. Aviation-branched warrant officers remain at Fort Rucker to complete flight training and the aviation WOBC.
Special Forces warrant officer candidates from both the active and national guard components attend the Special Forces Warrant Officer Technical and Tactical Certification Course (SFWOTTC) at the Special Forces Warrant Officer Institute, John F. Kennedy Special Warfare Center and School, Fort Bragg, North Carolina. The course includes both WOCS and WOBC, tailored to the unique training and experience of the Special Forces Sergeant. Candidates must be a staff sergeant (E-6, NATO: OR-6) and above, and have served three years on an operational detachment.
In 2008, the Army tested limited training of warrant officers at the United States Army Command and General Staff College at Fort Leavenworth, a course normally reserved exclusively for majors. The CGSC Class of 2009 included five warrant officers, and the Class of 2010 included nine warrant officers. Three 2010 graduates continued on to higher-level training at the School of Advanced Military Studies (SAMS) in 2011.
The Army warrant officer [Note 1] is a self-aware and adaptive technical expert, combat leader, trainer, and advisor. Through progressive levels of expertise in assignments, training, and education, the warrant officer administers, manages, maintains, operates, and integrates Army systems and equipment across the full spectrum of Army operations. Warrant officers are innovative integrators of emerging technologies, dynamic teachers, confident warfighters, and developers of specialized teams of soldiers. They support a wide range of Army missions throughout their careers. Warrant officers in the Army are accessed with specific levels of technical ability. They refine their technical expertise and develop their leadership and management skills through tiered progressive assignment and education. The following are specific characteristics and responsibilities of the separate, successive warrant officer grades:
a. Warrant officer one (WO1) / chief warrant officer two (CW2): A WO1 is an officer appointed by warrant with the requisite authority pursuant to assignment level and position given by the Secretary of the Army. CW2s and above are commissioned officers with the requisite authority pursuant to assignment level and position as given by the President of the United States. WO1's and CW2's primary focus is becoming proficient and working on those systems linked directly to their AOC/MOS, that is, their area of concentration (officer AOC), or an enlisted rank's military occupational specialty (MOS). Warrant officers are classified by warrant officer military occupational specialty, or WOMOS. As they become experts on the systems they operate and maintain, their focus migrates to integrating their systems with other branch systems.
b. Chief warrant officer three (CW3): The CW3s are advanced level technical and tactical experts who perform the primary duties of technical leader, trainer, operator, manager, maintainer, sustainer, integrator, and advisor. They also perform any other branch-related duties assigned to them. As they become more senior, their focus becomes integrating branch systems into larger Army systems.
c. Chief warrant officer four (CW4): The CW4s are senior-level technical and tactical experts who perform the duties of technical leader, manager, maintainer, sustainer, integrator, and advisor and serve in a wide variety of branch level positions. As they become more senior, they focus on integrating branch and Army systems into joint and national-level systems.
d. Chief warrant officer five (CW5): The CW5s are master-level technical and tactical experts who perform the primary duties of technical leader, manager, integrator, and advisor. They are the senior technical experts in their branches and serve at brigade and higher levels. They also serve as Command Chief Warrant Officers (CCWO) for large commands at the brigade level and higher.
Note: Chief warrant officer six was approved by the Army Chief of Staff in 1970 with the anticipation of Congress approving two new grades, W-5 and W-6. However, Congress did not authorize W-5 until 1991 and as of January 2017 has not approved W-6. The original W-5 insignia consisted of a single silver bar superimposed with four equally spaced silver squares with each square bordered in black. In 2004, this insignia was changed to a single silver bar surmounted by a single, narrow, vertical, black stripe. The proposed CW6 insignia had two narrow, vertical, parallel, black stripes.
The Marine Corps has had warranted officers since 1916, when the Commandant of the Marine Corps made a request to the Secretary of the Navy for the creation of two warrant grades, Marine Gunner and Quartermaster Clerk. Those appointed would be selected from the noncommissioned officer ranks.
On 26 August 1916, Congress increased the Marine Corps strength, which included adding the rank of warrant officer; 43 Marine Gunners and 41 Quartermaster Clerks would be appointed. The first Marine Gunner is believed to have been Henry L. Hulbert. On 22 May 1917, due to commissioned officer shortages, all but three of the appointees were commissioned as temporary second lieutenants. In 1918, the grade of pay clerk was added.
In June, 1926, Congress created the commissioned warrant grades of Chief Marine Gunner, Chief Quartermaster Clerk, and Chief Pay Clerk. Requirements for promotion to chief warrant officer were six years of service as a warrant officer and an examination to qualify.
During World War II, Congress abolished the titles of Marine Gunner, Chief Marine Gunner, Quartermaster Clerk, Chief Quartermaster Clerk, Pay Clerk, and Chief Pay Clerk. Instead, they would be designated warrant officer or commissioned warrant officer. In 1943, all Marine warrant officer ranks were aligned with the other services. They were warrant officer and commissioned warrant officer.
Then in 1949, the grade of WO (paygrade W-1) was created for warrant officers and CWO-2, CWO-3, and CWO-4 (paygrades W-2, W-3, and W-4) were created for commissioned warrant officers. In 1954, title "Chief Warrant Officer" replaced "commissioned warrant officer" for those in grades CWO-2, CWO-3 and CWO-4.
On 1 February 1992, the grade of CWO-5 (paygrade W-5) was created and those who are appointed serve on the highest unit echelon levels. Only 5% of chief warrant officers occupy this grade.
The duties U.S. Marine warrant officers typically fulfill are those that would normally call for the authority of a commissioned officer. However, they require an additional level of technical proficiency and practical experience that a commissioned officer would not have had the opportunity to achieve.
An enlisted Marine can apply for the warrant officer program after serving at least eight years of enlisted service, and reaching the rank of sergeant (paygrade E-5) for the administrative warrant officer program or after serving at least 16 years of enlisted service and reaching the rank of gunnery sergeant (paygrade E-7) for the weapons warrant officer program. If the Marine NCO is selected, they are given additional leadership and management training during the Warrant Officer Basic Course (WOBC), conducted at The Basic School at Quantico, Virginia.
In the United States Navy, the chief warrant officer (CWO) rank is a technical specialist who directs specific activities essential to the proper operation of the ship, which also require commissioned officer authority. Navy CWOs serve in 30 specialties covering five categories. CWO should not be confused with the limited duty officer (LDO) in the Navy. CWOs perform duties that are directly related to their previous enlisted service and specialized training. This allows the Navy to capitalize on the experience of CWOs without having to frequently transition them to other duty assignments for advancement. With the exception of the Navy's short-lived flying chief warrant officer program, all Navy warrant officers are accessed from the chief petty officer pay grades, E-7 through E-9, analogous to a senior noncommissioned officer in the other services, and must have a minimum 14 years time in service.
Warrant Officer 1 reinstatement
On 4 June 2018, the Chief of Naval Operations (CNO) announced the creation of the Warrant Officer-1 (WO1) pay grade (W-1) for cyber warrant officers, and solicited applications for the rank/grade. The message announced that they will not be ‘commissioned’. They will incur a six-year service obligation. In mid-December 2018, Navy announced that six selectees had been named. They will wear a distinctive cap badge with two crossed anchors.
The Navy has had warrant officers among its ranks since 23 December 1775, when John Berriman received a warrant to act as purser aboard the brigantine, USS Andrew Doria. That warrant was considered a patent of trust and honor, but was not considered a commission to command. Since this first appointment, Navy warrant officers have held positions as surgeons, master mates, boatswains, carpenters, and chaplains. Until 1912, a midshipman graduating from the United States Naval Academy was required to have two years of sea duty as a warrant officer before receiving a commission as an ensign. Although based on the British Royal Navy warrant officer ranks that were in place until 1949, the United States had never needed to address an issue of aristocracy, which resulted in warranted officers in the Royal Navy. However, the United States Navy experienced a similar issue of rank, where highly competent senior noncommissioned officers are required to report to inexperienced junior officers, giving rise to special status to the Navy's chief warrant officers.
In 1975, the Navy ceased using the rank of warrant officer 1 (WO-1), also known as pay grade W-1, because chief petty officers in pay grades E-7 and above with many years in service would lose pay when appointed to the rank of warrant officer. The Navy appoints their warrant officers directly to the rank of CWO2 (i.e., as chief warrant officers), and are "commissioned" officers, with the Navy Personnel Command/Bureau of Personnel (NAVPERSCOM/BUPERS) managing all grades (CWO-2 through CWO-5) by billets appropriate for each rank. In past years, some CWOs resigned their warrant commission prior to retirement to receive greater retirement pay at their former senior enlisted rank. However, this pay disparity has effectively disappeared in recent years and all Navy CWOs now retire at the appropriate officer grade.
Flying chief warrant officer
The Navy started a test program called the "Flying Chief Warrant Officer Program" in 2006 to acquire additional naval aviators (pilots) and naval flight officers (NFOs), who would fly naval aircraft, but who would not compete with traditional unrestricted line (URL) officers in naval aviation for eventual command of squadrons, air wings, air stations, etc., the numbers of such commands which had been greatly reduced in the post-Cold War era, thereby limiting the command opportunity for URL pilots and NFOs.
Enlisted sailors in the grades E-5 through E-7 who had at least an associate degree and were not currently serving in the diver, master-at-arms, nuclear, SEAL, SWCC, or EOD communities were eligible to apply. Upon being commissioned as CWO2, selectees underwent warrant officer indoctrination and then flight school for 18 to 30 months. After completion of flight school, selectees were placed in one of four types of squadrons: Shipbased Helicopter Maritime Strike (HSM) or Helicopter Sea Combat (HSC) squadrons, and land-based fixed-wing maritime patrol and reconnaissance (VP) and fleet air reconnaissance (VQ). These pilots and NFOs were then trained to operate the P-3 Orion, the EP-3E Aries II, the E-6 Mercury, or variants of the MH-60 Seahawk. Those in the VP community would also eventually qualify to fly the P-8 Poseidon once that aircraft began replacing the P-3 in 2012. The Navy re-evaluated the program in 2011, when the last of the "flying" chief warrant officers reported to their operational fleet squadrons and opted to subsequently terminate the program.
The United States Air Force no longer uses the warrant officer grade. The USAF inherited warrant officer ranks from the Army at its inception in 1947, but their place in the Air Force structure was never made clear. When Congress authorized the creation of two new senior enlisted ranks in each of the five services in 1958 (implementing them in 1959-60), Air Force officials privately concluded that these two new "super grades" of senior master sergeant and chief master sergeant (styling the incumbents as "superintendents" vice senior or staff NCOICs as does the USA and USMC) could fill all Air Force needs then performed at the warrant officer level. This was not publicly acknowledged until years later. The Air Force stopped appointing warrant officers in 1959, the same year the first promotions were made to the new top enlisted grade, chief master sergeant. Most of the existing air force warrant officers entered the commissioned officer ranks during the 1960s, but tiny numbers continued to exist for the next 21 years.
The last active-duty air force chief warrant officer, CWO4 James H. Long, retired in 1980. The last Air Force Reserve chief warrant officer, CWO4 Bob Barrow, retired in 1992. Upon his retirement, Barrow was honorarily promoted to CWO5, the only person in the Air Force ever to hold this grade. Since Barrow's retirement, Air Force warrant officer ranks, while still authorized by law, are not used.
Chief warrant officers in the Coast Guard may be found in command of larger small boat stations and patrol boats, as specialists and supervisors in other technical areas, and as special agents in the Coast Guard Investigative Service. They wear insignia essentially like that of their Navy counterparts, but with the USCG shield between the rank insignia and the specialty mark, as Coast Guard commissioned officers do with their rank insignia. Like their Navy counterparts, candidates for the rank of chief warrant officer must typically be serving in the chief petty officer grades (E-7 through E-9), however, the Coast Guard also permits selection of first class petty officers (E-6) who are chief petty officer selectees and who are in the top 50% on their advancement list to E-7. Like the Navy, the Coast Guard does not use the rank of warrant officer (WO-1). Although authorized in 1994, the Coast Guard does not currently use the CWO5 grade.
Public Health Service Commissioned Corps
42 U.S.C. § 204, 42 U.S.C. § 207 and 42 U.S.C. § 209 of the U.S. Code of law establishes the use of warrant officers (W-1 to W-4) with specific specialties to the Public Health Service Commissioned Corps for the purpose of providing support to the health and delivery systems maintained by the service, however the grades have never been used in Public Health Service history to date.
United States Maritime Service
The U.S. Maritime Service, established at 46 U.S. Code § 51701, falls under the authority of the Maritime Administration of the U.S. Department of Transportation and is authorized to appoint warrant officers. In accordance with the law, the USMS rank structure must be the same as that of the U.S. Coast Guard, while uniforms worn are those of the U.S. Navy, with distinctive USMS insignia and devices. 
Notable warrant officers
- CWO2/Chief Carpenter John Arnold Austin, USN
- FO Gene Autry, USAAF (Equivalent of WO1). (Flew C-109 in C-B-I, TV and Radio star)
- WO1 Floyd Bennett, USN (Medal of Honor)
- FO Jackie Coogan, USAAF (Equivalent of WO1) (Distinguished Flying Cross) (Glider Pilot in C-B-I, TV and Movie Star)
- CW5 David F. Cooper, USA (Distinguished Service Cross)
- CW4 Michael Durant, USA (Blackhawk Down)
- MAJ (was CW3) Frederick Edgar Ferguson, USA (Medal of Honor)
- CWO4 John W. Frederick, Jr., USMC (Navy Cross)
- James W. Hall, III, USA (convicted of espionage and stripped of rank)
- CW4 Thomas J. Hennen, USA (Astronaut)
- WO1 Olive Hoskins USA (the first female warrant officer)
- CW4 Oscar G. Johnson, USA (Medal of Honor)
- WO1 John W. Lang, USN (Navy Cross)
- WO1 Robert Mason, USA (best-selling author)
- CW2 Jason W. Myers, USA (Distinguished Service Cross)
- CW4 Michael J. Novosel, USA (Medal of Honor)
- CW5 Ralph E. Rigby, USA (last continuously serving draftee on active duty in the U.S. Army, retired in 2014)
- CW2 Louis R. Rocco, USA (Medal of Honor)
- MAJ (was WO1) Hugh Thompson, Jr., USA (Soldier's Medal recipient)
- John Anthony Walker, Jr., USN (convicted of espionage and stripped of rank)
- CWO4 Henry Wildfang, USMC (Gray Eagle Award recipient for longest-serving naval aviator; only chief warrant officer in the history of U.S. Naval Aviation so honored)
- CWO4 Hershel W. Williams, USMC (Medal of Honor)
- Brig Gen Chuck Yeager, USAF (World War II USAAF flight officer, equivalent to WO-1)
- CW4 Keith Yoakum, USA (Distinguished Service Cross)
- CW3 Ronald D. Young Jr., USA (POW, game show contestant)
- Aviation Cadet Training Program (USAAF)
- List of comparative military ranks
- Ranks and insignia of NATO armies officers
- List of United States Navy ratings
- List of United States Coast Guard ratings
- Army Staff Senior Warrant Officer
- Warrant officer definitions: (Per Army Pamphlet DA PAM 600-3 Commissioned Officer Professional Development and Career Management, Paragraph 3-9, dated 3 December 2014)
- Army Regulation 600-20, Army Command Policy, page 5, Table 1-2. Comparable grades among the services https://armypubs.army.mil/Search/ePubsSearch/ePubsSearchDownloadPage.aspx?docID=0902c851800103cd |accessdate=25 September 2016
- Brackin, William L. (1991). Naval Orientation (NAVEDTRA 12966). United States Navy Naval Education and Training Command. p. 9‑9. Retrieved 13 April 2015.
- Marine Corps Manual w/ch 1-3, page 2-7, paragraph 2101.1.a Officer grades in order of seniority are:, dated 21 March 1980 http://www.marines.mil/Portals/59/Publications/MARINE%20CORPS%20MANUAL%20W%20CH%201-3.pdf
- (17 July 2018) WOCC celebrates 100th birthday of Warrant Officer Cohort
- http://www.militarymuseum.org/Mines.html | The California State Military Museum - Forts Under the Sea - Submarine Mine Defense of San Francisco Bay
- "Warrant Officer History". U.S. Army Warrant Officer Career College. Retrieved 14 November 2011.
- http://www.tioh.hqda.pentagon.mil/UniformedServices/Insignia_Rank/warrant_officers.aspx |Insignia of Grade Warrant - Officers
- Ship's officers
- "Army Warrant Officer History 1950–1974". Warrant Officer Historical Foundation. Retrieved 17 January 2017.
- "Warrant officers to sport branch insignia" by Sgt. 1st Class Marcia Triggs. Army News Service (April 13, 2004).
- "Warrant Officer Assignments". U.S. Army Warrant Officer Career Center. Retrieved 16 April 2015.
- United States Army (August 2007). "Army Warrant Officer" (PDF). RPI-938. www.usarec.army.mil/warrant. Retrieved 4 September 2008.
- Headquarters, Department of the Army. "Military Grade and Rank", Army Regulation 600-20; Army Command Policy. Headquarters, Department of the Army. 18 March 2008. Accessed on 23 August 2008.
- "About the Army: Warrant Officers". United States Army Recruiting Command (USAREC) and the Department of the Army. Retrieved 4 September 2008.
- Bower, Melissa (18 June 2009). "Largest CGSC-ILEAca,!E+class graduates". www.army.mil. United States Army. Retrieved 11 August 2013.
- Bower, Melissa (7 April 2011). "SAMS warrant earns top rank". www.FtLeavenworthLamp.com. Fort Leavenworth Lamp. Archived from the original on 10 March 2012. Retrieved 11 August 2013.
- https://warrantofficerhistory.org/Hist_Army_CW5_Insignia.htm. Retrieved 17 January 2017. Warrant Officer Historical Foundation History of Army CW5 Insignia.
- "Henry Lewis Hulbert (1867 - 1918) - Find A Grave Memorial". Findagrave.com. Retrieved 2014-07-23.
- Bevilacqua, Allan C. Major USMC (Ret) Henry Lewis Hurlbert-Marine Gunner Leatherneck Dec 2008 Vol XCI No 12
- General Emphasizes Leadership at Warrant Officer Commissioning 2nd Lt. Patrick Boyce, 8 February 2007. Retrieved 25 January 2011.
- "History of the Warrant Officer". United States Army Warrant Officer Association. Retrieved 18 March 2007.
- "Warrant Officer Programs of Other Services". United States Army Warrant Officer Association. Retrieved 18 March 2007.
- "ACTIVE DUTY LIMITED DUTY OFFICER AND CHIEF WARRANT OFFICER IN SERVICE PROCUREMENT BOARDS". US Navy. Washington, D.C.: United States Government. Retrieved March 8, 2017.
- MODIFICATION OF THE NAVY CYBER WARRANT OFFICER PROGRAM, Chief of Naval Operations, 2018-06-04
- Navy appoints first W-1 officers in four decades. What’s next?, Mark D Faram, Defense News, 2018-12-13
- Commission of ensign to graduates of the Naval Academy at end of four years' course, Pub. Law No. 62-98. 37 Stat. 73 (1912).
- The Naval Officers Guide, 12th ed.,L. McComas, US Naval Institute, Annapolis, MD, c2011
- MILPERSMAN 15560.D, OPNAV 1811.3, OPNAV 1820.1
- "Flying CWO Program". Retrieved 28 February 2008.
- United States Coast Guard. "USCG Rank Insignias." United States Coast Guard. Department of Homeland Security. website. Retrieved on 8 October 2009.
- 46 U.S. Code § 51701 (c) Ranks, Grades, and Ratings.— The ranks, grades, and ratings for personnel of the Service shall be the same as those prescribed for personnel of the Coast Guard.
- Floyd Bennett
- David F. Cooper. "Valor awards for David F. Cooper". Projects.militarytimes.com. Retrieved 2014-07-23.
- John William Frederick, Jr. "Valor awards for John William Frederick, Jr". Projects.militarytimes.com. Retrieved 2014-07-23.
- "TogetherWeServed - WO John LANG". Navy.togetherweserved.com. Retrieved 2014-07-23.
- Jason W. Myers. "Valor awards for Jason W. Myers". Projects.militarytimes.com. Retrieved 2014-07-23.
- "Last continuously serving draftee retires after 42 years of service". 2014-10-28. Retrieved 2014-11-19.
- Keith Yoakum. "Valor awards for Keith Yoakum". Projects.militarytimes.com. Retrieved 2014-07-23.
- DoD Almanac. The United States Military Officer Rank Insignia. United States Department of Defense.
- US Army Institute of Heraldry Warrant Officer Insignia History
- United States Warrant Officer Association (USAWOA)
- United States Coast Guard Chief Warrant and Warrant Officers Association (CWOA)
- U.S. Navy Flying Chief Warrant Officers (unofficial)
- U.S. Navy Flying Chief Warrant Officers (official)
- Navy Pay Clerks
|Pay grade / branch of service||Officer
|Army||CDT / OC||2LT||1LT||CPT||MAJ||LTC||COL||BG||MG||LTG||GEN||GA||GAS|
|Marine Corps||Midn / Cand||2ndLt||1stLt||Capt||Maj||LtCol||Col||BGen||MajGen||LtGen||Gen|||||
|Navy||MIDN / OC||ENS||LTJG||LT||LCDR||CDR||CAPT||RDML||RADM||VADM||ADM||FADM||AN|
|Air Force||Cadet / OT / OC||2nd Lt||1st Lt||Capt||Maj||Lt Col||Col||Brig Gen||Maj Gen||Lt Gen||Gen||GAF|||
|Coast Guard||CDT / OC||ENS||LTJG||LT||LCDR||CDR||CAPT||RDML||RADM||VADM||ADM|||||
| No universal insignia for officer candidate rank; Navy candidate insignia shown|
Official 1945 proposal for General of the Armies insignia; John J. Pershing's GAS insignia: ; George Dewey's Admiral of the Navy insignia:
 Rank used for specific officers in wartime only, not permanent addition to rank structure
 Grade is authorized by the U.S. Code for use but has not been created
 Grade has never been created or authorized
 USAF and U.S. Army insignia shown
United States warrant officer ranks
 Grade is authorized for use by U.S. Code but has not been created
 Grade never created or authorized