I'm trying to dig into whether a WH Chief of Staff has ever come from the ranks of the military. It seems like....not a natural fit.
EDIT: Ah. Right. Nixon made Gen. Alexander Haig his chief of staff....because his first chief of staff, H. R. Haldeman, was under investigation as part of Watergate. I'm sure the Watergate thing is just a coincidence, the 432nd in a completely random chain of coincidences....
Well, before it became a formal role, I'm sure there have been a few with miltary experience of some sort or another.
Looking at the wiki list of Chiefs of Staff:
Wilton Persons had a stint during WWI and fought in WWII. He served Eisenhower.
Keith O'Donnell fought in WWII as a bombardier, left atfer the war ended. Served as JFK's chief of staff.
James Robert Jones, was in the reserves during the 60's, had a brief stint in the army intel corps. Don't think he actually saw battle. He worked under Lyndon Johnson.
MSH already mentioned Halderman.
Jack Watson was in the Marines for a while. Was in the Carter admin.
Donald Regan fought in the Pacific theatre of WWII, chief of staff under Ronald Reagan.
Howard Baker had some sort of Naval service during WWII. Chief of Staff under Ronald Reagan.
Samuel Skinner had a REALLY BRIEF stint in the army as a tank commander, like, a year or less, barely counts here. Chief of Staff under Ford.
Leon Panetta joined the army for two years during Vietnam. Chief of Staff under Bill Clinton.
So, having military experience (WWII mostly) isn't unusual, the fact that he chose a General seems a bit unusual.
Dunno about natural fit, but a general of particular merit would probably have a decent amount of experience corralling subordinates and relative peers to get something or another done, either directly or by knowing what sort of critter to tell to do it for 'em. Stuff's admin and logistics and politics as much as anything to do with combat.
Chief of staff really wouldn't be too distant from that, conceptually. 'Course, there's something of a different between the sort of enlisted military admin would be regularly dealing with and what that poor bastard's getting saddled with stepping into the WH.
Personally, I think a drill sergeant would be a better fit for Trump's White House, lol.
Also, who's going to be the Secretary of the DHS now? I wouldn't be surprised if Trump left the top position vacant.