As a former field-grade Army officer with some decent troop-leadership time, having been issued a M1911 and M1911A1 in the distant past when dinosaurs roamed the earth, I would take a Glock G19, G17 or G21 (or a Gen4 G22) in a heartbeat over a 1911-any 1911.
It's a good article-one of the best I've ever seen out of American Rifleman-but while I appreciate and enjoy my 3 1911s, in my opinion a Glock is simply a superior battlefield implement. They're lighter, less maintenance intensive, more easily field- and detail-disassembled, more weather impervious, and significantly higher capacity (which actually can be a viable consideration in a military pistol).
I understand the appeal of these USMC 1911s, but from a practical standpoint the selection of a Glock just makes far more sense-and the inherent accuracy increases of the Gen5s make it even more compelling.
As a sidebar note, I saw some of the images of the decommissioned M1945A1s that were offered; one of them had been crudely graced with a Sharpie rendition of a penis and testicles on one side of the slide. As a Gunnery Sergeant buddy of mine succinctly said, shaking his head when we were discussing it, said example had been effectively "Lance Criminalized." The authenticity of THAT example is certainly unquestioned...
Best, Jon