6th Marine Division (United States)

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6th Marine Division
6th MarDiv.png
6th Marine Division insignia
Active 7 September 1944 – 1 April 1946
Country United States
Branch United States Marine Corps
Type Infantry
Role Locate close with and destroy the enemy by fire and maneuver
Nickname The Striking Sixth[1] or New Breed[2]

World War II

Decorations Presidential Unit Citation
Lemuel C. Shepherd, Jr.

The 6th Marine Division was a United States Marine Corps infantry division that formed in September 1944 during World War II for the Battle of Okinawa where it was awarded a Presidential Unit Citation.[4] The 6th Division also had prepared for the invasion of Japan before the war ended. The division disbanded on April 1, 1946, and was the only Marine division to be formed and disbanded overseas and never set foot in the United States.[4][5]


World War II[edit]

Formation on the Solomon Islands[edit]

The 6th Marine Division was formed on Guadalcanal in the southern Solomon Islands on September 7, 1944.[4][6][7] The 6th division was formed from three infantry regiments, the 4th, 22nd and 29th Marines, and other units such as Engineer, Medical, Pioneer, Motor Transport, Tank, Headquarters, and Service battalions.[4] The core cadre around which the division was formed was the former 1st Provisional Marine Brigade, which included the 4th and 22nd Marine Regiments, plus their supporting artillery battalions - these artillery battalions were later combined into the 15th Marine Regiment.[4]

The Battle of Guam ended in August 1944 and the 1st Provisional Marine Brigade was called to Guadalcanal along with the 1st Battalion, 29th Marines, which had served with the 2nd Marine Division in the Battle of Saipan on the Mariana Islands. With a core of all these veteran from experienced units incorporated into the new division the 6th was not considered "green" despite being a new formation- half the forces in the 3 Infantry Regiments were all veterans,[1] some units were 70% veterans.[8] The 2nd and 3rd Battalions, 29th Marines disembarked from the United States on 1 August 1944, and landed on Guadalcanal on 7 September 1944 to further stand-up the Division.[4]


The 6th Marine Division wade ashore to support the beachhead on Okinawa, 31 March 1945.
A 6th Division Marine demolition crew watches explosive charges detonate and destroy a Japanese cave, May 1945
A patrol of Marines from the 6th Marine Division searches the ruins of Naha, Okinawa in April 1945.
Sugar Loaf Hill as seen from the north.

The now fully constituted 6th division trained on Guadalcanal before it was shipped 6,000 miles to land as part of the III Amphibious Corps on the island of Okinawa on 1 April 1945.[4] By 15 April, the division had swept through the northern Ishikawa Isthmus, where it came under fire by the Imperial Japanese Army. After heavy fighting in the south, the division replaced the Army 27th Infantry Division on the western island. The 6th division advanced south to partake in the assault against the strong Japanese defense line, called the Shuri Line, that had been constructed across the southern coastline. The Shuri Line was located in hills that were honeycombed with caves and passages, and the Marines had to traverse the hills to cross the line. The Marines that had assaulted the line were attacked by heavy Japanese mortar and artillery fire, which made it more difficult to secure the line.[4]

The division was ordered to capture Sugar Loaf Hill, which formed the western anchor of the Shuri Line defense.[9][10] The 22nd Marines had been ordered to capture the hill before the 29th Marines started fighting on the hill on 16 May. After a week of fighting, the hill had been taken.[9] The battle on Okinawa ended on 21 June 1945. The Sixth division was credited with over 23,839 enemy soldiers killed or captured,[11] and with helping to capture 23 of the island,[12] but at the cost of heavy casualties,[13] including 576 casualties on one day (May 16) alone.[14]

For its actions at Okinawa, the 6th Marine Division (and reinforcing units) earned a Presidential Unit Citation. The citation reads:

For extraordinary heroism in action against enemy Japanese forces during the assault and capture of Okinawa, April 1 to June 21, 1945. Seizing Yontan Airfield in its initial operation, the SIXTH Marine Division, Reinforced, smashed through organized resistance to capture Ishikawa Isthmus, the town of Nago and heavily fortified Motobu Peninsula in 13 days. Later committed to the southern front, units of the Division withstood overwhelming artillery and mortar barrages, repulsed furious counterattacks and staunchly pushed over the rocky terrain to reduce almost impregnable defenses and capture Sugar Loaf Hill. Turning southeast, they took the capital city of Naha and executed surprise shore-to-shore landings on Oroku Peninsula, securing the area with its prized Naha Airfield and Harbor after nine days of fierce fighting. Reentering the lines in the south, SIXTH Division Marines sought out enemy forces entrenched in a series of rocky ridges extending to the southern tip of the island, advancing relentlessly and rendering decisive support until the last remnants of enemy opposition were exterminated and the island secured. By their valor and tenacity, the officers and men of the SIXTH Marine Division, Reinforced contributed materially to the conquest of Okinawa, and their gallantry in overcoming a fanatic enemy in the face of extraordinary danger and difficulty adds new luster to Marine Corps history, and to the traditions of the United States Naval Service.

—Secretary of the Navy James Forrestal for the President[15]

Guam & China[edit]

In July 1945, the 6th division was withdrawn from Okinawa to the island of Guam to prepare for Operation Coronet, the planned invasion of Honshū, Japan that was supposed to occur in April 1946 but the Japanese surrenderd in August 1945. The 6th spent September in Guam preparing for duty in China[16]

The division arrived in Tsingtao, China on 11 October 1945[16] where it remained until it was disbanded on April 1, 1946.[5][17] In its time at Tsingtao the division not only accepted the surrender of local Japanese forces (on Oct 25th[5][17]) but also oversaw their subsequent repatriation to Japan; prevented the communists from attacking the surrendered japanese forces and dissuaded communist forces from advancing on the city,[18][19][20] and came to be seen as the protector of minority groups in the former German concession[17]

Campaign and Award Streamers[edit]

Streamer Award Additional Info
Naval Presidential Unit Streamer Presidential Unit Citation Streamer Okinawa, April 1 — June 30, 1945
China Service Streamer China Service Medal (Extended) Oct. 11, 1945 — March 26, 1946
Asia-Pacific Campaign Streamer Asiatic-Pacific Campaign Medal[21]
World War II Victory Streamer World War II Victory Medal

Medal of Honor recipients[edit]

The Medal of Honor was awarded to five Marines and one Navy corpsman assigned to the 6th Marine Division during World War II:[4]

See also[edit]


  1. ^ a b Hallis (2007), p.15
  2. ^ Sloan (2008), p.398
  3. ^ The 15th Marines was an artillery regiment
  4. ^ a b c d e f g h i Sixth Marine Division Official Web Site
  5. ^ a b c Nofi (1997), p.79
  6. ^ Carlton (1946), p.1
  7. ^ Rottman (2002) p.140.
  8. ^ Sloan (2008), p.147
  9. ^ a b Wukovits (2006)
  10. ^ Sugar-Loaf the Gateway to Naha
  11. ^ sources vary: 20,532 killed and 3,307 taken prisoner according to Carlton (1946), p.123, or 23,000 killed and over 3,500 captured according to Stockman, p.16
  12. ^ Stockman, p.16
  13. ^ sources differ as to how many: The official report lists 8,222 casualties, of which 1,622 were killed. The official Sixth Division Website states nearly 1,700 killed or died of wounds and more than 7,400 wounded. Stockman (p.16) says 8,222 Kiled and wounded. Frank & Shaw (1968) in appendix M gives 9,105 killed, missing, or wounded. Carlton (1946), in the Appendix Charts has 1,337 dead, 5,706 wounded and nearly 11,000 total casualties. while Wukovits gives 2,662 killed or wounded at Sugar Loaf Hill alone with another 1,289 having to be evacuated from there due to exhaustion or battle fatigue
  14. ^ Carlton (1946), Appendix Chart No. 1
  15. ^ Frank & Shaw (1968), p. 886 (appendix N)
  16. ^ a b Stockman, p.18
  17. ^ a b c Stockman, p.19
  18. ^ Stockman, pgs. 18–19
  19. ^ Shaw (1968), pgs. 6–13
  20. ^ Frank & Shaw (1968), pgs. 607–609
  21. ^ Members of the Division HQ during Okinawa are eligible for a bronze campaign star



Further reading[edit]

  • Cass, Bevan G., ed. (1987) [1948]. History of the Sixth Marine Division.  1st (1948) Edition published by Infantry Journal Press, Washington, DC. 1987 reprint published by Battery Press, Nashville, TN
  • Lacey, Laura Homan (2005). Stay off the Skyline: The Sixth Marine Division on Okinawa: An Oral History. Washington, DC: Potomac Books. ISBN 9781574889529. 
  • Shilin, Alan T. (January 1945). "Occupation at Tsing Tao". Marine Corps Gazette 29 (1). 

External links[edit]