@PotomacBobActually, yes, the Marines are considered, nominally, as part of the Navy, and thus attend the Naval Academy. However, the Marine Corps University at Quantico is akin to the Senior War College in the Navy (i.e. teaching Command techniques for active engagements with highly focused, intense training).
My father, a Naval Chaplain, actually attended, once he reached the rank of Captain—which incidentally, meant he could no longer serve on any Naval ship other than an Air-Craft Carrier, as then he'd be the same rank of the ship's captain, which isn't allowed, due to the potential of the one Captain potentially undermining the active ship's captain.
By the way, my father, an avid hunter, also was eligible for multiple awards, including a purple heart and the Merit of Honor Award (he was providing services for the native Vietnamese U.S. forces during the Tet Offenses and thus ended up being the first to return fire, allowing the rest of the corp to grab their weapons and regain control), but due to pressure from the Chaplaincy, was forced to turn it down, as it sends a conflicting signal about the role of Chaplains as official Peace Keeping forces during time of war. Oh, he also was nominated as an Active Combat helicopter gunner, since he flew so many times during his two tours there.
Then again, when he option to testify against he son being Court Marshaled for being gay, the entire Chaplaincy Corp and EVERY single chaplain he'd ever worked with turned the backs on him for being loyal to his own son and testifying honestly about his character (My brother's case was combined with Matlovich's, and resulting in the Supreme Courts' overturning of the 'Don't Ask, Don't Tell' policy. So they both make their own history in slightly different ways.
Though both died young, my father as a result of Agent Orange exposure and my brother due to AIDS (the 'gay' disease). He was the most promising of the initial treatment protocol until he wasn't (he died a week later, due to his body rejecting the mediation).
But as they say, the good die young. By the way, Space Force is just another way of saying, the militarization of the previously free access of space exploration policy of most nations. Now there's a widespread to 'claim' as much space as each nation can. But alas, the Pres' long claimed 'laser-attacks from space' were merely a pipe dream, never proving practical.
One thing about the military, they absolutely refuse to learn anything from history. ;)