TTA + intensity = 35 man siege force. Defiance = 30 man siege force. BW = 15-30 man siege force (numbers seem to be all over the place). Rats = 15+ man siege force (although seem a little dead atm), Chald = 15+ man siege force. TTA + intensity cant beat defiance 35 v 30 so allies Rats and helps Chald (making them appear to be allies). So TTA + intensity + rats + Chald = 65 man siege force. Neither Defiance or BW can 30 v 65 so they ally up. (Which btw seems to be what sero and grimtide wanted, pretty sure they have both asked for it at some point.) Defiance and BW would not have allied up if they were not expecting to be so heavily out numbered. Without Chald you are a 50 man siege force, with them a 65 man siege force, either way Defiance / BW alone do not come anywhere close to matching your numbers, so what do you expect to happen?