Not necessarily engaging in war, or long term conflict. I’m simply asking about the use/deployment of the federal military (for this purpose, I would include any nationalizing of state level militias).
Off the top of my head, I can’t think of any:
GW Bush, obviously, has gone to war (even if not technically) in Iraq and Afghanistan.
Clinton had Bosnia
Bush, Sr. had Iraq
Reagan had Grenada
Carter tried to rescue hostages in Iran
Ford was in office while we were in Vietnam, right?
Nixon, LBJ, and JFK = Vietnam
Ike had Korea (and federal support of desegregation in the South)
Truman and FDR had WWII
So, did any US President NOT use militaty force (I suppose I should except William Henry Harrison, since he died a month into his term, although I’d be delighted if even he managed to order an attack on someone)?