Years ago, I worked with a former Marine Corps Intelligence Officer (MOS 0202) who was an Air Force Academy graduate. When asked the obvious question about the dissonance between his alma mater and service, he said that graduates of the three U.S. military academies have the option of selecting the branch of the armed forces they want to serve in. The vast majority go on to serve with their academy’s sponsoring service but occasionally one selects a different branch.
I also recall having an officer candidate from the US Military Academy at West Point in our Platoon Leaders Combined (PLC) Combined Course the summer I went to Officer Candidates School at Quantico. (Several decades ago now.)
Post 24, please.