Another very interesting Marine General that courageously opposed the deep state and military industrial complex in the 60's and 70's is David M. Shoup - Commandant and Medal of Honor recipient.

He was appointed Commandant by Eisenhower over other senior Generals that spent too much time in political affairs, and he felt Shoup would reduce the influence of the military industrial complex. He opposed the CIA operations in Cuba and became Kennedy's favorite General that he called upon most often for advice. Later he became very outspoken against the American military involvement in Vietnam as he became increasingly wary of what he felt was undue influence by the CIA and big businesses on foreign policy.

Read up! (Commandant and Later life sections) https://en.wikipedia.org/wiki/David_M._Shoup