Cavalry vs Infantry / Artillery

+6 Victory!  Lose 1 casualty. Defender is ridden down
5-1 Melee with élan. Defender melees unformed
0 Retire with 1 casualty. Defender stands with 1 casualty
-1 to -5 Retire with 1 casualty. Defender stands
-6 or worse Retreat with 1D3 casualties. Defender stands

Afterwards

Winning supports Stand or if a melee result then close to melee if the target can be reached. If a Victory! then continue to support lead unit or stand
Losing supports Retire if lead unit retires / retreats / routed, otherwise stand
Risk to general If general attached and charge lost with retire or retreat result then roll on Risk to General table