That's the M30 4.2 Inch (Four Duce) mortar. It is a rifled muzzle loading, high-angle fire weapon. It was phased out of service during the 1980's.
Four-Duce in action. That's Zebro and James Brown in there as "guests" on this fire crew. They belong to the Alley Oop gun crew.
This is an early photo, 1968.
That's an M109 SP Howitzer! Introduced in the 1960's, it weighs in at 27.5 tons. It is fitted with an 50 Cal. (Ma Duce) machine gun up on top. Twenty-eight rounds of 155MM were carried onboard as well as 500 rounds for the 50 cal.
The SP guns had to stick to the roads in Vietnam, weighing in at 27.5 ton, they would sink in the muck if they strayed far from hard surface roads.
This ammo came in 8 each to the pallet. Each round weighed in at 95 pounds.
The Chinook was a work horse for supply and personnell transport, especially when the road to Tay Ninh was closed.
That's Tom Dwyer (Left), James Potter (Middle), and myself, all together in French Fort, 1969.
Chinese made weapons taken on a sweep by the infantry guys.
This is an early photo, 1968. That's the most dependable weapon the Army ever issued me!
Looking out over an M60, from a guard bunker.
Yes, it was an actual S--- detail!
The material was taken out, mixed with kerosenel and burned.