Common sense told me Morgan had to be wrong. I verified it. You can, too. And it's not just one or two, either. Besides, it's bullshit. Whether you call it War or Defense, combat veterans have been the head civilians in charge of the US military establishment since the founding of the Republic. Being an Irishman, Morgan probably has no clue Defense used to be called War.
So you can’t name a person who held the title Secretary of Defense who was a combat vet, and won’t admit you were wrong. Instead you changed the question. You haven’t verified anything.