These are US military symbols commonly used with maps for wargaming and arraying forces on the battlefield. I used current US Army regulation as guidelines when making these so they are mostly in accordance with regulation. I also used designs from commonly used military stencils. Overall, however, I made them easily printable and scaled to a usable size with standard military maps.
This design is for a heavy armor battalion. You can print as the whole battalion (without supporting units) or individual units.