In the AT Vii (100 days), it states…
Gallop at Anything: Commanders issuing a Charge order to a unit with this rule
gain +1 to their Staff Rating to do so. Cavalry with this rule automatically gain
the Ferocious Charge rule (Black Powder, page 90) but must make a break
through move if allowed even if this takes them off the table.
… So, Forrest is correct! :o] .:. Walts