To answer the literal question posed in the article, I can think of a whole hell of a lot of people I'd rather have in a foxhole than some 70 year old geezer whose only military experience was dressing up in a uniform in high school.
But if I'm not supposed to take it literally....I knew plenty of guys with whom I'd share a foxhole, but wouldn't want in charge of a lemonade stand. Completely different skill sets. To put a finer point on it, I had a fair number of Marines who were excellent fighters, but would be a disaster if you put them in charge of anything larger than a fire team. So Trump's personal "toughness" really doesn't impress me.