It's not like they're fighting for the survival of the US. Much of the fighting is due to some stupid idea in the head of some politician, or even in the service of corporate profits, and a lot of innocent lives get sacrificed on those altars.

If you want to support those brave service men and women, it's better to support better medical care for veterans. It's bizarre that that's been such a long running problem in such a warlike country. But that's something that takes care of the actual people involved rather than the questionable corporate/political motives behind some wars.