Professional militaries use symbols to represent formations on maps. Here is my conversion of standard military symbols to Ogre units.
"The material presented here is my original creation, intended for use with the OGRE system from Steve Jackson Games . This material is not official and is not endorsed by Steve Jackson Games."
" OGRE is a registered trademark of Steve Jackson Games, and the art here is copyrighted by Steve Jackson Games. All rights are reserved by SJ Games. This material is used here in accordance with the SJ Games online policy."