20th Marine Regiment (United States)

20th Marine Regiment was a Composite Engineer Regiment of the United States Marine Corps that fought during World War II. == Subordinate units == The regiment was a composite of three different types of battalions and a headquarters and service company: Headquarters & Services Company 1st Battalion, A, B,& C Companies 4th Engineer Battalion 2nd Battalion, D, E, & F Companies 4th Pioneer Battalion 3rd Battalion, G, H, & I Companies 121st Naval Construction Battalion == History == 20th Marines was formed on June 15, 1943, at Marine Corps Base Camp Lejeune, North Carolina, it originally consisted of three battalions and was assigned to support the 4th Marine Division. The 1st and 2nd Battalions were made up of the 4th Marine Engineers and Pioneers while the 3rd Battalion was formed with US Navy Construction Battalion personnel also known as Seabees.

Source: Wikipedia — 20th Marine Regiment (United States) (CC BY-SA 4.0)