Scourge of War Boards

<t>I am stuck on this part of the Kershaw carry over mod. I find that the Union Troops on the Emmitsburg RD like to come down and flank me while im assaulting the Stony Hill, Woffords and Barksdale's Birgades just sit there and do nothing. Any tips on how to beat this level?<br/> <br/> I tried posit...