He served through the Mexican Expedition and then transferred to the Army Signal Corps (U.S. Airforce precursor) and was assigned to the 94th Aero Pursuit Squadron. He is credited with seven victories.
His post-war project, Florida Airways, (with partner Eddie Rickenbacker) went bankrupt due to damages suffered because of a hurricane. As insurance for aircraft did not exist at that time, there was no way to recoup the losses.
Major Chambers next project, the founding of the United States Aircraft Insurance Group (with David Beebe) created the aircraft insurance industry.
He died in St Tomas, US Virgin Islands on January 16, 1972.