How do sweet deals from sites like DontPayFull work? On-site, we have a collection of military science coupon codes, military science promotional codes and military science discount codes. For the military science offers and additional items, you can find equal coupon codes as well. When you visit the online shopping site where you are making a purchase from, all you have to do is key in the coupon code. It works pretty much the same way that an current magazine or newspaper coupon does. Once the code is used, you can get a sure percentage off the original price - which means significant savings for your online shopping purchases!