I once had a never-ending crusade because the French crusading army was sailing in the waters near Antwerp, disembarking from time to time, and getting back aboard. Not a single unit deserted.

I never figured what were they doing there, since the target of a crusade was in the Holy Lands.

Finally the general died of old age, and the whole army returned to France. The crusade ended.

I was playing on M/M.