World War II Era From A New Mexican Perspective
When war broke out in Europe and Asia in 1939, the War Department suggested to the National Guard that their 111th Cavalry convert to another branch of service. The age of the horse as a combatant had passed. Thus, the officers and non-commissioned officers of the command jointly selected coast artillery. In 1940, the 111th was re-designated the 200th Coast Artillery Regiment (AA) and the 158th was reorganized as the 104th Anti-Tank battalion. On January 6, 1940, these units, along with the 120th Engineer Regiment, were called to active duty for a one-year training period that became the prelude to some of the earliest combat experienced by American troops in World War II.