When moving a crusade army through the Alps, double clicking to skip the lengthy walking animation, and then noticing that the pass was blocked and your foolish general decided to walk from Innsbruck to Venice via the route Bern-Milan. Desertion, here I come...

Parking my 8 command 4 piety general in a ship on the coast of Crete on his way home to Europe and having him fried by an Inquisitor.