developed a new smaller triangular cavalry division, which the 1st Cavalry Division evaluated during maneuvers at Toyahvale, Texas, in 1938. Like the 1937 infantry division test, the maneuvers concentrated on the divisional cavalry regiments around which all other units were to be organized. Following the test, a board of 1st Cavalry Division officers, headed by Brigadier General Kenyon A. Joyce, rejected the three-regiment division and recommended retention of the two-brigade (four-regiment) organization. The latter configuration allowed the division to deploy easily in two columns, which was accepted standard cavalry tactics. However, the board advocated reorganizing the cavalry regiment along triangular lines, which would give it a headquarters and headquarters troop, a machine gun squadron with special weapons and machine gun troops, and three rifle squadrons, each with one machine gun and three rifle troops. No significant change was made in the field artillery, but the test showed that the engineer element should remain a squadron to provide the divisional elements greater mobility on the battlefield and that the special troops idea should be extended to include the division headquarters, signal, and ordnance troops; quartermaster, medical, engineer, reconnaissance, and observation squadrons; and a chemical warfare detachment. One headquarters would assume responsibility for the administration and disciplinary control for these forces. Although the study did not lead to a general reorganization of the cavalry division, the wartime cavalry regiment was restructured, effective 1 December 1938, to consist of a headquarters and headquarters troop, machine gun and special weapons troops, and three squadrons of three rifle troops each. The special troops remained as structured in 1928, and no observation squadron or chemical detachment found a place in the division. With the paper changes in the cavalry divisions and other minor adjustments, the strength of a wartime divisional rose to 10,680. In order to prepare for war service, 1st Cavalry Division participated in the following maneuvers: Toyahvale, TX Maneuvers – 7 October through 30 October 1939. Cravens-Pitkin Louisiana Maneuvers – 13 August through 24 August 1940. Second 3rd Army Louisiana Maneuvers – 10 August through 4 October 1941. VIII Corps Louisiana Maneuvers near Mansfield, LA – 27 July 1942 – 21 September 1942. World War II History Composition The division was composed of the following units: 1st Cavalry Brigade 5th Cavalry Regiment 12th Cavalry Regiment 2nd Cavalry Brigade 7th Cavalry Regiment 8th Cavalry Regiment 1st Cavalry Division Artillery 61st Field Artillery Battalion 82nd Field