This Vietnam war in-country machine-embroidered patch  measures 3.5" by 2.75", used condition. 

During the Vietnam war, the 7th Squadron of the 1st Cavalry Regiment already had of three Air Cavalry Troops. “A Troop”, called the Apaches, configured their scouts with a gunner carrying an M16 rifle and riding in the right rear cargo compartment door. “B Troop”, known as the Dutchmasters, carried their gunner, who manned an M60 machine gun, in the left front seat. “C Troop”, call sign Comanches, carried two gunners. Each armed with M16 rifles. One observed from in the left front copilot seat while the other rode in the right rear cargo door. None of their scouts were equipped with mini-guns. Their reconnaissance tactics and Squadron policies required the scouts to fly fairly high and quite fast...

A valuable addition to your collection of Vietnam war memorabilia items.