An M1 towing an M1 is ambushed by a unit of german infantry and as result the escorting american infantry move to engage. The Sergeant's life is saved when shrapnel pings off his M1 so he yells at the squad to fix M1's to their M1's while they fire at the germans using M1's, M1's and M1's. They are confident taking the engagement because if the germans turn out to have a tank the squad has an M1 standing by and if any enemy aircraft appear well theres a known battery of M1's nearby. The engagement finally ends when they call over radio for fire support from nearby M1's. As you can imagine parts are seldom compatible between different M1's.