My view on the military, (as well as many things these days), is far from black and white.
On a practical level, the military is necessary. There simply exists no other way to protect a larger community of people, (we call these countries), without it. As long as survival is the primary driver of human existence, some form of armed protection is necessary, in aggregate. Bad and dangerous governments do exist, and pose a practical threat to innocent people. Something is needed to balance this. I am appreciative of anyone willing to put their life on the line for the greater good of the larger community I live in. I view it as hypocritical to think otherwise.
Having said that, I cannot think of many military initiatives post-WW2 that the US has been involved in that I would have supported, apart from those that had a primary focus of humanitarian effort. Korea,Vietnam, the first Gulf war, Afghanistan, and especially Iraq, all were tactical in nature, and in the end caused greater threats over the long-term. The evidence of this speaks for itself. The Cold War unfortunately was a by-product of WW2, and likely unavoidable, however. Fortunately, we managed to not blow the planet up yet. We had some very close calls during the Cuban Missile Crisis, and during the Reagan "Star Wars" years. Much of that was classified for a long time, and has since surfaced. Scary shit, really.
Our military model is also very outmoded. Once of the big problems with the elimination of the draft, has been that most who enlist, (not those in training for office), do so because of having no other opportunities, (such as higher education or entrepreneurial skills), available to them. This is fine during peacetime, when either a career can be built from this directly, or one can use take advantage of the GI bill later. This fails badly however during times of war, (which the US has perpetually been involved in at some level since 9/11), when troops are forced to do multiple tours of duty, simply because no newer recruits are added to the roster. In effect, this becomes a race to the bottom for the underprivileged. I think this is a big ethical issue we need to face. It will require a paradigm shift of sorts on many levels, however before that will happen.
d4g