There is not a military passport so you should renew as suggested above.DS's passport expires shortly before R-day. I assume we renew it for 10 years, but before we spent the $$, wanted to check to see if I'm missing anything. Do cadets get a military passport? Is there such a thing?
Definitely renew your passport before R Day. You will need the Blue passport for leisure travel.
At USMA if you do an overseas AIAD (basically an internship) you will be required to have both a regular Blue passport and a Red Official passport. The Red passport is obtained after selection for the AIAD.