Junior officer, company officer or company grade officer refers to the lowest operational commissioned officer category of ranks in a military or paramilitary organization, ranking above non-commissioned officers and below senior officers.
The terms company officer or company-grade officer are used more in the Army, Air Force, or Marine Corps as the ranks of captain, lieutenant grades and other subaltern ranks originated from the officers in command of a company or equivalent (cavalry squadron/troop and artillery battery).
In the United States Armed Forces, the term junior officer is used by the Navy and the Coast Guard for officers in the ranks of ensign (O-1), lieutenant, junior grade (O-2), lieutenant (O-3),and lieutenant commander (O-4).
- Enlisted rank
- Officer (armed forces)
- Warrant officer
- "Commissioned Officers". Ranks. CanadianSoldiers.com. Retrieved 31 January 2013.
- "Captain". Ranks. canadiansoldiers.com. Retrieved 4 February 2013.
- "Lieutenant". Ranks. canadiansoldiers.com. Retrieved 4 February 2013.
- "company officer". Free Merriam-Webster Dictionary. Merriam-Webster, Inc. Retrieved 4 February 2013.
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