We had a Company Commander back in Germany,(1983, 1984), He couldn't call cadence worth a damn. It became insidious, then he would yell "grenade", and we all had to put bellybutton to the blast. There were a few seargents in the battalion that knew cadence. Vietnam vets, and wearing drill Sgt insignia. No longer drill Sgt's of course. None the less it was a fantastic experience to be in the TOW Platoon Combat Support Company 2nd Battallion 22nd Infantry 4th Brigade 4th Division United States Regular Army infantry.