Having carried a 1911 Colt or a Smith M15 or a Browning Hi-Power at one point or another during my two tours in Vietnam, I'd say that 99% of guys in actual combat units would gladly carry the extra weight of a side arm. Ask any combat veteran.
If the current inventory of handguns is worn out...then we need to replace them and cost be damned. We owe it to our troops. As one suggestion, we could fund it out of the "cell phones for welfare recipients" program among others of equal merit.
A pistol or revolver, much more so than a rifle/carbine, is never out of reach: showering points, sleeping bags, the local cat house, you name it, the short gun was NEVER out of reach. Riding in jeeps (OK Humvees now), almost precludes the use of even a short carbine, BUT NOT A PISTOL. Same with an aircraft that crash lands, assuming you survive the sudden halt.
As to the type, manufacturer etc., a good 1911 is hard to beat. DA/SA systems are OK, if you can keep the grip size down where today's personnel can use it. I'd say that a 1911A1 is as close to that spec as any other type and a lot more user friendly for smallish hands than the current M9. Compare an M9 to the 1911 and I think you'll find that it's thicker, bulkier, and larger around than the venerable Colt design.
Caliber is another arguing point. 9mm doesn't cut it in many cases and the notion that ammunition compatibility between our troops and our so-called allies is vital is ludicrous. Hell we buy most of their needs anyway if truth be told, let 'em use what we use. Training is the real issue...if we issue hand guns to troops, for God's sake train them to use them...
Lastly, and for once, let it be a US manufacturer, not some overseas conglomerate with a token us plant...we need the bucks, and jobs here and also the manufacturing base. Out sourcing to China, Russia, India or any other place overseas is insanity. Does anyone actually believe we'll be allies with that bunch when the next balloon goes up...gimme a break.
Rod (an old fart who carried a "useless" pistol" for 23 months and would rather have given up his jungle stompers than part with it.)