Agree with A Nerd but also be sure to move all troops off the wall, because you wont be able to move troops off damaged parts of the wall at the speed of the shelling at speed 6x. Also be sure to slow down to speed 1x or pause so that you can arrange your troops to protect the breaches. third use this as an oppurtunity to use your siege (through the breaches) As for them leaving their siege equipment this usually only happens if 1) you start the siege battle by sallying forth 2) you send some troops during a siege battle to attack the battalion holding the siege engines (for catapults and the such they pick them back up but ladders, rams and towers they ignore) Oh while they are bombarding i like to destroy their siege towers than concentrate on their rams, ladders cant be destroyed an honestly the troops come up so slowly that ifyou have a good battallion (or slightly lower grade than attacking battallion) of two handeds your fine. ive had spear militia hold off chivalric Knights(dismounted) granted i bombarded them with arrows so there were only 82/150 but still.