by robotaku
I don't see any reason why you couldn't do it: the rules are as broad about movement because you can move your figures anywhere on your side, simple as.The flanks are primarily established so you have a place you know you can shoot your catapult without the fear of accidentally hitting your own castle while being technically behind your castle line, as far as I know.
Is there a particular reason why placing a warrior in front of your castle is advantageous?