The position of the army changed a lot while I was away. With a single glance at the army and its surroundings, I easily recreated what happened.
The crusading army had entered a thick living forest of living mountains with an ordinary forest underneath it. Although many trees were withered or chewed on, they still grew as tall as a human's height!
These trees and the living mountains impeded the movement of humans and their carts, forcing the army to stretch into a longer procession. Humans had to find their way between the mountains and push away or cut down the trees, which wasn't helping, either.
And of course, thick vegetation like that was an excellent breeding ground for all kinds of insects and wild beasts.
Now some of them attacked Malevolence's army, and she led her soldiers to attack these beasts!
This was the first time I had seen a crusading army in action with my own eyes and wasn't imagining things based on stories and reports of the soldiers.