Personalized My Grandpa Is A Veteran Military family Youth Long Sleeve T-Shirt. Military grandkids My Grandpa is a veteran Youth Long Sleeve T-Shirt - Red has red white and blue USA American flag duck for a boy or girl. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)