same here. I was trying to get my assaulting army into a city where I could prepare a defence at the breaches against a reinforcing enemy army while my rear was busy holding off the garrison, which was angry, and still in the city. I lost an entire accensi unit because they went into single-file while lining up to enter one of the breaches, and the single file stretched all the way to the edge of the map, where, I may add, the reinforcing army was just arriving. And to make things worse, when contacted by the enemy, rather than getting the hell out of there they charged at the enemy army, and got slaughtered, one man at a time. WTH.

Oh, and in settlements, if your units have one or two men lagging behind the main body of the unit (this usually happens when you order multiple units through a breach or to move through the streets at one time) then the unit will proceed at a walking pace regardless of how many times you double-click it to order it to run.