RE: M1911 in military service
Yeah, people get emotional about the 1911. I own several, have built hundreds, and like them more than any other handgun. However,I rarely carry a 1911 anymore. I usually carry a 27 or 23 now because they're light,have larger mag capacity, and are far more reliable than a 1911.
When I was a machine gunner, I carried an M9. I didn't like it one bit and didn't trust it. But it never once malfunctioned.
It really doesn't matter what the military uses as the "standard" sidearm. They're rarely used anyway. Spec Op's units have always gone their own way and use what ever handgunfits their specific mission.