Most have a really hard time being second-in-command to 24 year olds (or anyone younger than them or deemed as someone they should outrank). Many of the ones I've flown with that ended their career flying a desk also have very rusty stick skills and don't seem too concerned about hearing feedback from someone that didn't spend 20 years flying a Viper or a Buff. If they were in charge of a unit before they left, they really don't like me telling them what to do and how to do it.

Even though many of these Captains may be young, they could have several thousand hours flying commercial jet aircraft as both an FO and a Captain. You may be a Major or Commander, but that doesn't mean you can't learn from the "lesser" side of aviation.

These are mostly just the negative things I've found. Most military pilots are consummate professionals, quick learners, and skilled aviators. Unfortunately, it's the ones who can't seem to check their egos at the door that stand out the most and give all military pilots a bad name.