Hmph. You complain about how terrrrrrible Obama is...and then you state that you don't think we should have gone into Libya or Syria, and you're adamantly opposed to a military presence in the Ukraine.
So...seems to me that in YOUR eyes, Obama shoulda kept us in Iraq, but made the right decisions with Libya, Syria, and the Ukraine - he's three for four! That's a pretty good batting average, if you ask me.
And when it comes to the 'top brass', perhaps you should read up on how Douglas MacArthur publicly stated that he wanted to drop an atomic bomb on NK, and Truman not only said 'NO!' but also publicly fired him. MacArthur then went on the public speaking circuit and was the darling of the hawkish red-scare Right (we were FAR more hawkish then than we are now).
The Army hated Truman for not agreeing to drop the Bomb - after all, why not, didn't it work in Japan? The Army also hated Truman for requiring equal opportunity for blacks in the military. It turns out in the generations since, though, that Truman was right to not drop the Bomb, to fire MacArthur, and to require equality for blacks in the military.
The point is, Obama's not the military's most-hated commander-in-chief. I'd say Truman probably was, though Woodrow Wilson probably wasn't far behind. But just because a commander-in-chief makes decisions that are unpopular with the military doesn't make him wrong.