Zs,
Doesn't just about every movie made about war degrate our armed services? Except of course for "Saving Private Ryan".
But think about Platoon, Full Metal Jacket, Hamburger Hill, The Caine Mutiny, Jar Head, 3 Kings, etc.
In almost every war movie, there is a very human and flawed aspect to the soldiers, which often is designed to show, these are young boys capable of making mistakes that may haunt them forever or cost them their lives. It also humanizes them, showing the audience, they are people, imperfect in design and function and action.
In other words, you can't really make a war movie where everyone is perfect, unless of course, your name is Spielberg
It is the imperfection of the soldiers that allow the audience to identify with them, not the other way around.