We just managed to kill like 30 odd k CS in Luria. 20k from the South, 10k from the North and then probably a few other random ones. I took on the 10k with my 1.6k (initially) CS SF and killed them by myself in 6 consecutive battles.
Then we just killed the rest with 4-5 nobles. They didn't move all together and split up so it was relatively easy pickings. They also suicided on a townsland for a bit.