While veteran populations vary from census to census, most agree that there are approximately 22 million military veterans in the U.S. population. If you add these figures on veterans to the active personnel numbers mentioned above, 7.3% of all living Americans have served in the military at some point in their lives.
A breakdown by branch of service of all living Americans:
• 3.1% have served in the Army
• 1.7% in the Navy
• 1.4% in the Air Force and,
• 0.8% in the Marines, while the remaining,
• 0.5% served in either non-defense or reserve roles.