I've seen people make comments about Trump's never serving any elected position being unacceptable. Eisenhower's first elected office was President. He seemed to do well.
I have no problem with him not being elected before. But to compare a guy who avoided military service because his Dad had some pull to a guy like Eisenhower who served his country nearly his entire life is more than a stretch.

Since the original goes back to not having elected office, and since Eisenhower is the only one who somewhat recently fits that bill, who else do you think would be a better comparison to?
What per cent of the population Donald's age served in the military? I do not know, but it would be way under 50%.
Does that then make then ineligible to be President? What about Obama and the Clintons? Both of them? None of them served.That's a funny one Mel. If they had served, they would have found their way to courts-martial.
Bill for felony diddling with his cigars, Hilly for dereliction of duty (or eating girl scout cookies), a the Zero would have peed positive for any number of things (and maybe eating boy scout cookies).
I like the idea of a president having past (honorable) military service (leaving out Kerry). It is not a requirement; but recall, in our founding father's time,
every able bodied man was considered a militia member.
On the other hand, the military has been so much much better off
without this bunch of dickweeds ever having served. It's bad enough they serve in the big G. Be so much better if they served.... time.
We've all seen it before, but it's as funny the 15th time as the first.

The list of all presidents with some military service is larger than most think. (some piddling, some risked their lives, repeatedly)
https://en.wikipedia.org/wiki/List_of_Presidents_of_the_United_States_by_military_service