Miller, who leads all U.S. troops in Afghanistan, has used the .45 as his general officer assigned weapon since 2009. A former Delta Force operator, Miller first used the M1911A1 in 1992.

also known as Delta Force, and eventually commanded a Delta troop in Iraq and a Delta squadron in Afghanistan, Army Times previously reported. "I have deployed to combat at every rank, from ...

Many of these operators have numerous back-to-back deployments to Iraq and Afghanistan. The selection process is classified ...