In June 1940, President Roosevelt created the V-12 Navy College Training Program to prepare men under the age of 28 for the eventual outbreak of World War II. Muskie formally registered for the draft in October 1940 and was formally called to deck officer training on March 26, 1942. At 28, he was assigned to work as a diesel engineer in the Naval Reserve Midshipmen's School. On September 11, 1942 he was called to Annapolis, Maryland to attend the United States Naval Academy. He left his law practice running so "his name would continue to circulate in Waterville" while he was gone. He trained as an apprentice seaman for six weeks before being assigned the rank of midshipman.