CD

a personal assistant whose responsibility it is to coordinate the personal affairs of the general-grade officer to whom he is appointed.  The rank of the aide-de-camp is a function of the rank of the [..]

military activity involving aircraft: most commonly the use of helicopters and fixed-wing aircraft for the tactical support of infantry units in combat or for transportation and logistical support

the standard-issue 7.62 mm assault rifle used by the Viet Cong and North Vietnamese infantry soldier

large caliber weapons that operate by projecting explosives far beyond the range of personal weapons. The branch of the army that customarily operates these weapons

a tree common to southern Asia that puts out aerial shoots that grow down into the soil forming additional trunks

military housing for enlisted

a permanent or semi-permanent area used for tactical operations, such as positioning an artillery battery, as a supply depot, or a rear echelon administrative center.  The perimeter refers to the man- [..]

a tactical unit of artillery

and men, howitzers