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.
In 2011, the Army replaced the black wool beret with the patrol cap as the default headgear for the Army Combat Uniform.[1][2][3]
In 2019, the Army proposed the creation of a new grey beret for USASOC soldiers qualified in psychological operations (PSYOP), but has yet to receive its official approval. In the meantime, grey berets are only issued to Army Junior ROTC cadets.[4]