The last major USMC offensive in Vietnam. By this point in the war, the struggle wasn’t really a COIN operation, but rather the conventional forces of the US struggling to stem the flow of conventional North Vietnamese forces into the I Corps area of operations.
URR will be happy to see lots of M101 guns. Some good splodey included, as well. And how sad is it that the same CH-46 and CH-53 choppers still form the backbone of Marine rotary winged aviation today?
OK, the CH-46 is on the way out, and the CH-53s in service today are “E” models built in the 80s and 90s, but you get the point.