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Marine Observation Squadron 1
Marine Observation Squadron 1
	VMO-1 insignia
Active	27 July 1943 – 31 July 1993
Country	United States
Branch	USMC
Type	Observation
Role	Artillery spotting; Aerial reconnaissance
Garrison/HQ	Inactive
Nickname(s)	Yazoo
Motto(s)	"Can Do"
Tail Code	ER
Engagements	World War II; * Battle of Guam; * Battle of Iwo Jima; Operation Desert Storm

Marine Observation Squadron 1 (VMO-1) was an observation squadron of the United States Marine Corps which saw extensive action during World War II and supported numerous contingencies during the Cold War. The squadron was last based at Marine Corps Air Station New River, North Carolina and saw its final deployment in support of Operation Desert Storm in 1991. The squadron was decommissioned on 31 July 1993.

History

World War II

Marine Observation Squadron 155 (VMO-155) was formed at Marine Corps Air Station Quantico, Virginia on 27 July 1943. In November of that year they moved out to San Diego, California and on 1 January 1944, they were redesignated Marine Observation Squadron 1 (VMO-1) and deployed to Espiritu Santo. In February 1944, they moved to Guadalcanal and in July they joined the III Amphibious Corps and participated in the Battle of Guam. In February and March 1945, the squadron also participated in the Battle of Iwo Jima.

1946–1980s

In January 1946, the squadron moved to Marine Corps Air Station Cherry Point. During the Korean War, they trained replacement pilots for the war and supported operation of the 2nd Marine Division. In 1950, the squadron received eight Cessna OE-1 for light fixed wing operations. In 1952, they moved to Marine Corps Air Station New River and received their first helicopters. The tail code during this time was changed from LR to ER. In 1953 the squadron received the Cessna OE-2. In 1958, the squadron was part of the U.S. 6th Fleet task force that intervened in Lebanon and in 1965 they participated in the U.S. intervention into the Dominican Republic. From 1964 to 1968 the squadron operated without any fixed wing aircraft.

In July 1968, VMO-1 became conversion to the OV-10 Bronco and by 1971 they were an all fixed-wing squadron. During the 1970s and 1980s, the squadron rotated through deployments to Japan and supported exercises throughout Asia, the Mediterranean, the Caribbean and Northern Europe.

In 1974 VMO-1 set a Navy/Marine Corps Maintenance record with 21 of 21 OV-10A aircraft up with all systems go for 21 days in a row. Commanding Officer was Lt.Col. Art Dittmeier. Maintenance Officer was Major John H. Pierson Jr.

On 5 July 1974 VMO-1 Pilot John H. Pierson Jr. and Co-pilot Major David R. Shore set a world straight line non-stop distance record for Class C 1 f Group II (Turboprop) aircraft. The flight covered 2,769.84 miles from Naval Air Station Whidbey Island, in Washington State to Homestead Air Force Base, in Florida. The aircraft was equipped with an internal auxiliary fuel tank in the cargo bay and an Aero 3C external fuel tank which provided total fuel for over 12.5 hours flight time. The original reason for the flight was to demonstrate the OV-10A trans-Atlantic capability which Marine Corps Headquarters staff planners did not recognize at the time. <Certificates: Federation Aeronautique Internationale; National Aeronautic Association> <Janes 1974> <Aviators Flight Log Book Log 2, 26 Aug 1968 to 31 Dec 1974; 5 July 1974 log entry OV-10A, Serial Number 155448, Flight Code 1A2, Total Flight Time 12.4, First Pilot 6.2, Co-pilot 6.2, Instrument Time 3.0/Simulated 3.2, Night Time 7.7., Landings 1>

1990s and deactivation

In December 1990, the squadron boarded the USS America and USS Theodore Roosevelt headed for Saudi Arabia to support Operation Desert Shield. When Operation Desert Storm began, the squadron flew over 1000 combat sorties with the loss of 1 aircraft and 1 pilot killed in action. Upon their return, the squadron was deactivated on 31 July 1993.

Unit awards

	Navy Unit Commendation (with one bronze star)
	Meritorious Unit Commendation
	Asiatic-Pacific Campaign Medal
	World War II Victory Medal
	National Defense Service Medal (with two bronze stars)
	Armed Forces Expeditionary Medal
	Southwest Asia Service Medal (with two bronze stars)

Notes

References

Bibliography

Rottman, Gordon L. (2002). U.S. Marine Corps World War II Order of Battle - Ground and Air Units in the Pacific War, 1939 - 1945.’’. Greenwood Press. ISBN 0-313-31906-5.
Sherrod, Robert (1952). History of Marine Corps Aviation in World War II. Washington, D.C.: Combat Forces Press. OCLC 1261876.