0313 Share definition Flag The baddest marine there is. Trained as a 0311 but also trained to destroy the enemy with a tank on wheels. I wish I would have been a 0313 crewman instead of a gay 0311 scout. 0313 by Leeboy12344 July 31, 2016 0 0 Get merch Get the 0313 mug. Buy Now — $32.95 See more merch