This US Army machine embroidered patch measures approximately 4" by 3", used condition. 

During the Vietnam War, the 1st Cavalry Division (Airmobile) Field Artillery Brigade, commonly known as the "First Team," was a key component of the United States Army's involvement in the conflict. The Field Artillery Brigade played a crucial role in providing artillery support for the division's operations in Vietnam.

The 1st Cavalry Division (Airmobile) was one of the first Army divisions to be deployed to Vietnam in 1965. The division was known for its use of helicopters, which allowed for rapid deployment and mobility. The Field Artillery Brigade was responsible for providing artillery support, including fire support coordination, fire direction, and artillery batteries that could deliver indirect fire on enemy positions.

The Field Artillery Brigade's mission included providing artillery support for the division's infantry and other units, as well as conducting fire missions in support of combat operations. This support was vital for everything from base defense to offensive operations against North Vietnamese and Viet Cong forces.

The 1st Cavalry Division (Airmobile) Field Artillery Brigade, along with the rest of the division, played a significant role in various campaigns and battles during the Vietnam War. Their ability to rapidly move artillery pieces and provide timely fire support was a crucial asset during the conflict.