One of the interesting things about the US military is the uniformity of training. There's an entire group in the Army called TRADOC, or Training and Doctrine Command. The US military is sort of slow to adopt new ideas, but once they do, TRADOC makes sure everyone gets them pounded into their heads. I haven't been in the Marines for close to 35 years, but I can still tell you what BAMCIS is an initialism for and could probably still call in a fire mission.
Even though leaders who attend boarding schools at West Point and Annapolis have a leg up politically, the US military has been open to good ideas coming from places other than service academies. Modern Maneuver Warfare came from a political rando. But he was a political rando with a decent idea and access to pentagon staff.
And no one seems to know who came up with the "lazy commanders" concept that is so often attributed to Moltke. It's a decidedly American concept that couldn't possibly have survived the Prussian Army of the 19th century. (The best source I've heard is Kurt von Hammerstein-Equord, which is a little surprising, but maybe he said it right after WWI.)
But yes... military boarding schools in Maryland and New York cast a long shadow over the US armed services.
Annapolis smacks you upside your head whenever you start to get an ego about having come from Annapolis, so most of the people I know get along fine with ROTC or other sources of officers. Generally, the political connections come from outside the experience at the academy, most of the folks I went there with were just regular people with no political connections, and today they are still just regular people. The folks who rise to the top like Captains or Admirals all have the connections they have from their families or elsewhere.
Yup. My dad retired as a bird colonel and went to Baylor, then OCS. And I think Colonel Day who lived across the street came from a random university in Iowa. But my dad had more than 10 air medals, a couple DFCs, multiple-award silver star, bronze star w/ V and Colonel Day had the most amazing array of ribbons topped with a CMH. So another way is to kick ass and get a lot of awards. Though I don't know if that gets you into the General ranks. I think there's an assumption that Generals have to be pretty politically aware and people who rack up the medals and awards may be "opinionated." I mean... there's a reason John McCain retired as a Captain and not an Admiral, despite family connections.
Which is to say... I think you're onto a general rule, but like everything else there are exceptions.
Even though leaders who attend boarding schools at West Point and Annapolis have a leg up politically, the US military has been open to good ideas coming from places other than service academies. Modern Maneuver Warfare came from a political rando. But he was a political rando with a decent idea and access to pentagon staff.
And no one seems to know who came up with the "lazy commanders" concept that is so often attributed to Moltke. It's a decidedly American concept that couldn't possibly have survived the Prussian Army of the 19th century. (The best source I've heard is Kurt von Hammerstein-Equord, which is a little surprising, but maybe he said it right after WWI.)
But yes... military boarding schools in Maryland and New York cast a long shadow over the US armed services.