The first Anti-UIF offensive and the giant fail that followed + destruction of my army and the little Kingdom of Stromgarde.
Then I've been drugged and taken into "The Alliance" of small factions (Crusaders, Teneris), as we stationed around Halmar. We were about to be stomped by UIF when the Great Ban hit.
Then Risen took over, made us drop Halmar, and at this point I've abandoned them and decided to play on my own for a while, it was around that time when the idea of writing a Strategus Guide hit me.
Then... I can't recall when exactly, but I was assisting Phalangites in their advances on inactive Huscarls, who suddenly came back to life. I've got into a fight with one army bigger and better equipped than me, but the enemy forgot to prepare a roster and in the end I was 3 times richer and better equipped.
I marched west and took Reveran, finishing my guide, and that was the moment when
Russians attacked me, ignoring my previous trade propositions
Reveran, never forget.