The Summer of 1918, Walt's brothers had all gone off to war, but Walt was not old enough to join them, attending his final year of high school was all but inconceivable. His best friend and stage partner Russell Maas had many of the same feelings as Walt, and one day announced that the Red Cross was seeking Volunteers, and Russell had decided to join up... Walt decided to join up along with him, despite being a few months shy of his 17th birthday (the required age). He announced to his family his plans, and his father strictly forbid it. Walt's mother Flora explained to Elias that he had already had three of his sons sneak away in the middle of the night to join the armed forces (Walt's older brother and future business partner Roy had joined the Navy), and Flora was not going to let that happen to Walt. So she forged his name on his passport application and Walt adjusted the 190'1' to read 1900, and Walt was accepted into the Amubulance corps... On November 18th, almost two weeks before Walt would be of legal age, Walt left for France aboard the transport ship, the Vaubin.
In short, didn't avoid his duty, never got drafted because he was already volunteering.
/All that from memory
//okay, had to look up the name of the Transport ship
///love Disney history