reinforced regiments - and battalion landing teams (BLT) - or reinforced
battalions [when utilized amphibiously, but in Korea, where the division and
subordinate task units fought mostly in land campaigns, these were called
regimental combat teams (RCT) and battalion combat teams (BCT) like the
Army's]. This organization of the Marine division permits flexibility in task
groupings for many situations, in place of a fixed organization for all situations.14
Within a Marine Division were three maneuver elements, the infantry regiments.
These were typically employed in the assault or the defense with two forward and one
held back as reserve. Below these were the infantry battalions, "the basic tactical unit
organized to form a balanced fire and maneuver team." (See Chart # 8) Again
containing a triumvirate of principal subordinate units, the battalion contained three rifle
companies (sometimes four), each having three platoons of three rifle squads. Each
squad was composed of three fire teams. In addition to the infantry regiments, the
Marine division included one regiment of artillery numbering 3,108 men.15
The reinforced regiment (RCT) or Battalion Combat or Landing Team (BCT or
BLT respectively) could have various elements attached. Organic to it were three
infantry battalions, a headquarters and service company, a weapons battalion, a 4.2
inch mortar company, a communications company, a TACP (Tactical Air Control Party),
an anti-tank company, as well as other elements. A Marine regiment without
reinforcement numbered 3,902 men (169 officers and 3,733 enlisted). The infantry
regiments of the 1st Mar Div in the Korean War were the 1st, 7th, and 5th Marines.
Sometimes a Korean Marine Corps (KMC) regiment was also attached to the division.
The 1st Mar Div artillery regiment was the 11th Marines.16
14 James Donovan, United States Marine Corps, 98-99.
15 Ibid., 99.
16 The nine rifle companies in a Marine regiment were designated by the letters A, B, C, D, E, F, G, H,
and I, with A, B, and C - called according to the phonetic alphabet Able, Baker, and Charlie - in the first
battalion; D, E, and F, -- Dog, Easy, and Fox - in the second battalion; and G, H, and I - George, How,
Montandon, Joshua W. Battle for the Punchbowl: The U. S. 1st Marine Division 1951 Fall Offensive of the Korean War. Denton, Texas. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc3938/. Accessed July 30, 2016.