Recruit Training Battalion T-Shirts Non-base specific recruit training battalion t-shirts and MCRD Parris Island training battalion t-shirts. All Items Here are all the products in this category: • Battalion Chrome T-Shirts • 1st Battalion Parris Island Shirts • 2nd Battalion Parris Island Shirts • 3rd Battalion Parris IslandT-Shirts • 4th Battalion Parris Island T-Shirt