"Was the unit in T mode? Perhaps the MG unit in the target hex stack was in T mode, and the infantry battalion was not? Was the target unit in a Marsh or on a Beach (they make units more vulnerable)? In any case, it would not be unreasonable for a "high" roll result I think. Also, are you playing against a human? A human can very well select several MG units and/or an MG unit and a field gun in a hex and fire them together for a combined result, and all you will hear is the sound of the unit on top firing (ie. the MG)."
Single German MG unit firing up elevation @ 2 hex range; defenders both in combat mode, clear terrain, single shot, human opponent. Never saw anything like it; played all told about 100 campaign turns in F 14. Normal shot is 20 men lost at best. jonny