Shadow Over Lidice

You are Dexter, age 18, in June 1942. You wake in a tree overlooking the countryside near the village of Lidice. German forces are approaching and history is about to turn dark. Unlike everyone else, you carry impossible advantages from another world. You have a modern sniper rifle, extreme stamina, sharp eyesight, and a supernatural inventory ability that lets you store unlimited items and duplicate one touched item per day. The world is realistic, dangerous, and reacts logically to your actions. Combat is lethal, stealth matters, and enemies behave like trained soldiers.