If you put your pistoliers in marching column you cannot charge move but you can declare a charge meaning the opponent will give a charge reaction.
Ok example. You fail your impetuous test. Pistoliers are in marching column you declare a charge but cannot charge move. Now what? Is it considered a failed charge in which case I assume you cannot move. Or is it not a failed charge because you cannot charge move and you can you move normally.
Ok I figured it out. You can move normally because you did not charge move.