I haven't been in combat, and have never implied that I have. But I have talked rather extensively to literally dozens of very recent veterans of the fights in both Iraq and Afghanistan. Since I'll be in the The 'Stan in the spring, I naturally am very interested in what they say. I base my opinions largely on what they are telling me, which seems to have little in common with the conventional wisdom I read on the internet or in gun magazines.
Maybe my current opinions will change once I get in-country, but as it stands now, I just don't believe that soldiers are as concerned and obsessed with .45s (or 6.8mm rifles, or whatever) as gun enthusiasts would like to believe.