During the Vietnam War, the United States Marine Corps (USMC) did have a Marine Air Base Squadron (MABS) designated as MABS-13. MABS-13 was part of the Marine Aircraft Group (MAG) 13, which was based at Chu Lai Air Base in South Vietnam.

MABS-13 was responsible for supporting Marine aviation operations in the region. They provided essential services such as aircraft maintenance, logistics, and airfield operations to ensure the successful deployment and operation of Marine aircraft in Vietnam.

Chu Lai Air Base was strategically important during the Vietnam War, and it served as a major hub for Marine aviation activities in the northern part of South Vietnam. MABS-13 played a crucial role in supporting the Marines' efforts during the conflict.