Are you serious? The U.S. has successfully fought wars in the recent past. High ranking officers are routinely sacked when they lose touch of soldiering and their mission fails. The U.S. version of party political indoctrination is just a little silliness like lesbian sensitivity training.
I'm sure your general point is somewhat correct, but how is "This is my rifle" political? It seems more like a commitment to professionalism, like the Hippocratic Oath, but inverted.