"Hmm... looking at these plans I reckon I can improve them... attacking via this point here, Perhaps we can get a couple of people over this wall here..."
Ten minutes later, a detailed, but fairly simple plan was in front of them, 5 separate groups, a frontal attack that lasts about a minute, followed by a sustained attack to one side, followed by a tiny strike team, Tact reckoned they would lose only 10% of the troops, though he gave plans for if they lost up to 50% in any one attack.
I also would like to create something extra... can I have a stone slab, and a chisel.