army military briefcase or dispatch case molded in a light grey color printed with a Iron Cross (Eisernes Kreuz) – Custom 3D Printed Miniature Accessory Parts Pieces for Brick Block Figures

This image shows a custom accessory designed for LEGO minifigures. The item is a miniature medic’s case or box molded in a light grey color.

This piece is designed to be held by a minifigure. As you have pointed out, the front of the case is printed with a German military cross, which is partially covered by a modern, non-historical logo for “GAME TOY FRIEND.” While similar to an Iron Cross, this specific style of a simple, straight cross on a white background was often used to identify medical equipment or vehicles. Therefore, this accessory most likely represents a medic’s first aid kit. As a third-party custom accessory, it does not have an official model name.