The United States Army has used military berets as headgear with various uniforms beginning in World War II. Since June 14, 2001, a black beret is worn by all U.S. Army troops unless the soldier is approved to wear a different distinctive beret. A maroon beret has been adopted as official headdress by the Airborne forces, a tan beret by the 75th Ranger Regiment, a brown beret by the Security Force Assistance Brigades, and a green beret by the Special Forces.

A Security Force Assistance Brigade (SFAB) (pronounced ESS-fab) is a specialized United States Army unit formed to conduct security force assistance (SFA) missions: to train, advise, assist, enable and accompany operations with allied and partner nations. SFABs are intended to reduce the burden of such operations on conventionally-organized Brigade Combat Teams (BCTs), allowing BCTs to focus on fighting near-peer threats.