Cavalry vs Cavalry

+6 Victory! Defender routs with 1D6 casualties
5-3 Melee with élan. Defender melees unformed
2 to -2 Melee. Defender counter-charges to melee
-3 to -5 Melee unformed. Defender counter-charges and melees with élan
-6 or worse Retreat with 1D3 casualties. Defender takes the ground

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