Maurice Rose lied about his age to enlist in the Colorado National Guard as a private after graduating from high school in 1916, hoping to serve in the Pancho Villa Expedition. He was discharged six weeks later when his commander was informed that he was underage. Re-entering service, he was commissioned through Officer Candidate School in 1917, served in World War I, and was killed in action as a Major General Commanding the 3d Armored Division during World War II.