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Marine Helicopter Squadron 1 was activated 1 December 1947 at MCAS Quantico, VA. The primary mission of the new squadron was to test and evaluate Marine helicopters and develop tactics and operational doctrine. HMX-1 also tested several armament systems for use on helicopters, including the TK-1, used on UH-34Ds in Vietnam, and the TK-2, used on the gunship version of the UH-1E.
Another mission performed by HMX-1 is to provide helicopter support for the Marine Corps School aboard Quantico, including the Basic School and the Officer Candidates School.
The best known squadron mission is supporting the White House Military Office. Since 1957, HMX-1 has provided helicopter transport for the President, Vice-President, and other VIPs. This duty was shared with the Army until 1972, when HMX-1 became the sole provider of Presidential helicopter support.
Activated 1 December 1947 at Quantico, VA, as Marine Helicopter Squadron 1
Began Presidential support mission in February 1957.