If he’s interested in attending a small liberal arts school, definitely consider Gettysburg College; it has an incredible history department, and the Eisenhower Institute both brings in speakers and adjunct professors, and connects undergrads with heavy hitters in D.C. As well, Dickinson College (nearby, also excellent) has an ROTC program, and Gettysburg students can be a part of it. If he wants to go to a bigger school, consider something in Washington DC; all three schools have a lot to offer a history/government/poli sci kid who loves to debate 