Wayne attempted to "serve" in other ways as well...
He was well known for showing up randomly at Ft. Bragg for years after he shot the film "The Green Berets" and bringing a case of beer and just sitting in the public area near SF HQ and "sharing a beer" with various special forces soldiers, hanging out, chatting, getting to know them, and letting them get to know him..
He went on multiple USO tours during WWII, Korea, and Vietnam..
I think he likely held a very warm place in his heart for veterans and active service members..
Not everyone can don the uniform and serve.. but everyone can support those that protect our freedoms... many choose not to.. Wayne, despite having fame, fortune, etc.. went out of his way to support and serve those in uniform... even when he didn't have to..
As a veteran myself, I have quite a bit of respect for his decisions...