OSTHEER IS DONE WHEN IT'S DONE!
Ok... but why?
Later in the war the russias did use tacticle retreats, pressing t represend one of those. So if you, the commander, order your men to make a tactikle retreat your own trops would not start to shoot them.You must also think about how it would translate into the gameplay. A good player would begin to move his soldiers in a way so they didn't stand in your own retreat road and he would order his men to attack the ground when they pass by. It just seems weird that the commander should have to work so hard and give so stange orders to ensure that his soldiers doesn't kill each other.