There are many discussions and lots of confusion about Piling In out there. I couldn't fin a clarification on the following. 1. What is to stop a unit from Piling In over the top of an enemy? The Pile in move of course would be 3" or less. This would allow the front rank to leap over and attack and the 2nd rank to step forward and become the new front rank and then the 3rd rank could also be in reach. I know you can't go over models in the move phase but this is the combat phase. 2. Congo Vertical Line. Place your tar pit in a straight vertical line. If it reaches combat at its tip then the enemy is forced to always pile in around the front most model. Limiting its models that can attack back. You are also limited but you don't care because its a tar pit. This seems to highlight how Pile In needs a rules tweak to also allow you to move to a non closest model if it would allow you to get to fight where as pile in towards the closest would not.