I was thinking about logistics and economics of the AE and the March towards Golgoterath.
What if the current crusade is just to fertilize ground and, secretly, Kelhus has been planting trees, wheat and what not on the road with all dead fertilizer.
To reap the riches in a next true crusade in 10-15 years time...to have all the food ready for bigger, healthier and thus more powerfull host.