From the publisher:
Encounters: Bands of Orcs is a highly adaptable list of orc encounters for beleaguered Castle Keepers!
Bands of Orcs is a game supplement that contains six different orc encounters from simple raiding parties to larger war bands. It includes one shaman party encounter. Each encounter is scaled for low, medium or high level adventurers. Each encounter has the number of orcs, equipment, hit points, treasure and adventure hooks that could be used.
A list of common orc names is given at the end of the document to help flesh out the individual encounters!