This was something everyone I knew who served made a point to emphasize.
Some, especially those who served in the enlisted ranks or were mustangs(officers who came from the enlisted ranks without any/much break in military career path) tended to urge those of us who had higher-ed educational opportunities from the outset to attend college first and then join as officers.
However, their main reasoning wasn’t due to the perks of higher rank. Rather, they all emphasized their feeling that those demonstrating high academic/intellectual acumen to the point of being admitted to colleges…especially respectable/elite ones like the FSAs or Ivy/peer elites can contribute far more with their abilities and skillset potential as officers than enlisting straight out of HS.
Several were also concerned about socialization issues of someone closer to the right side of the academic curve due to their own experiences and observations in the enlisted ranks…especially the brothers who were 20+ year career Marines with stints as drill sergeants at Parris Island before retiring.
Saw one of them lecturing an older kid who received a full NROTC scholarship to a respectable college who was eager to enlist in the Marines straight out of HS that given the great academic potential he demonstrated by earning admission and that NROTC scholarship, he’d be “holding out on the Marines and his country” if he enlisted straight away rather than going to RPI on the NROTC scholarship as a Marine option cadet and joining as a Marine officer as he can make a far greater contribution to the corps and the country.
Also, his brother was the father of an elementary school classmate who was obsessed about doing all he could to prepare his son to gain admission to and excel at Annapolis so he can commission as a Marine officer upon graduation. It was clear he wasn’t going to approve of his son enlisting straight out of HS despite the fact he did in a sense right before the Korean War*.
- He actually dropped out of HS ~9th-10th grade because as the oldest brother in the family with lower academic performance than his younger siblings, his working-class Puerto Rican/Cuban parents needed him to start working to help financially support the family and to keep the younger more academically higher achieving siblings in school. Once he was 18, he enlisted as that was the best option for him careerwise considering the financial and educational constraints he was faced with.