With respect to the original poster's question, you may have been badly advised pq2U. Once the French column charged, and contacted your defending unit in line, how do you mean your statement "the rules state I could not charge it" with your other flanking column? Was the French column no longer in the 'charge arc' of flanking column? Was it too far away? Did you
not declare a charge by your 'flanking column' on the French column?
Andy's approach (above) is absolutely the correct one, if no 'arc' or distance issues pertain: just follow the rules for "Reinforcing Melee" on p.38, by declaring and resolving your charge into the French column's flank. As the French unit is already locked in Melee with your line unit, it does not test to 'stand'. In Melee you will follow the rules for Multiple Unit Melees (also p.38), and take the best result of the
two dice rolls (one for each unit on your side), with additional modifiers for Outnumbering; whereas the French column will have only one dice roll, and be subject to a -4 modifier for being attacked in the flank.
I think I know which side I'd rather be on . . . :lol:
Edit: For all those who believe the phasing French column should get to 'react' to the declared charge of the 'flanking column', I refer you to page 3 of the following thread where Dr. Brown has ruled:
http://generaldebrigade.13.forumer.com/viewtopic.php?t=2470&postdays=0&postorder=asc&highlight=canceled+cancelled+charge&start=0 . . . which apologies for re-opening any old wounds!