After graduating from college in the spring of 1968, Trump received a 1-Y medical deferment for bone spurs in his heels. (He had previously received 4 student deferments for college.) Trump must still be looking for a copy of the "very strong letter on the heels" from his doctor since his spokeswoman did not respond to repeated requests for it. Fortunately, Trump's spurs, wherever they were, didn't stop Trump from playing football, tennis, and squash at college.
"He's not a war hero," Trump said of Arizona Sen. John McCain, a Republican. "He is a war hero because he was captured. I like people who weren't captured." http://www.newsday.com/donald-trump
Although Khizr Khan's son is a war hero, having been killed in action by a suicide car bomb, Trump complained that "Mr. Khan, who does not know me, viciously attacked me from the stage of the DNC and is now all over T.V. doing the same. Nice!" http://www.politico.com/2016/08/trump-khan-feud
Trump said, “If you look at his wife, she was standing there, she had nothing to say, she probably — maybe she wasn’t allowed to have anything to say, you tell me.” http://www.nytimes.com/2016/07/31/donald-trump-khizr-khan-wife-ghazala
According to Khan, one of his son's personal heroes was former POW John McCain.
I would ask what kind of barbarian would attack the parents of a fallen soldier, but oh yeah it's the same person who attacks POW's.
Meghan McCain, daughter of John McCain https://twitter.com/meghanmccain