Shortly after the United States entered World War I in April 1917, Captain Case and his troop were mobilized on July 25 and re-organized as Company A of the 103d Machine Gun Battalion which was assigned to the 26th Division.
Shortly after the United States entered World War I in April 1917, Captain Case and his troop were mustered into Federal service on July 25. On August 20, Case's troop was re-organized as Company A of the 103d Machine Gun Battalion which was assigned to the 26th Division.