The 21st Cavalry Brigade, also known as the 21st Cavalry Brigade (Air Combat), was a unique unit in the US Army, functioning as the combat aviation training brigade. It was the only unit of its kind in the armies of the world. The brigade's history began with the formation of the AH-64 Task Force Headquarters, part of the 6th Cavalry Brigade, on July 14, 1984. This unit was responsible for all planning, programming, and force modernization actions related to the training and fielding of all AH-64 Attack Helicopter Battalions in the Army. The brigade's motto, "Impetum Persequi," Latin for "Continue The Attack," reflects its commitment to training and the development of aerial forces. The brigade trained over 80 battalion-sized units and played a significant role in the training of international aviation personnel from various countries.