Sessions 17-20 of New Dawn in a single, huge, post with maps.
These sessions involved a lot of stuff, but the big strategic picture was that when the PCs took two weeks to reorganize their forces and gain some new troops out of training, the orcs took that time to consolidate their forces into two armies, each larger than the PCs' augmented forces. The PCs relied on cunning and trickery to defeat the orcs. There was also a lot of role-playing and the introduction of two new players and a possible co-GM/Adversary.
http://noschoolgrognard.blogspot.com...ration-of.html