One for all and all for one 4

Holy mother, did he have 8 Necromancers and all artifacts focused on Necromancy?

I think I was off by about a week. On the fifth week, he launched an attack and by the end of the fifth week, he had captured the last important town. There were a lot of Necromancers there – I myself managed to raise over 600 skeletons in a week, but I started raising them from the 4th week when I got my first Necromancer.