Battle Strategies Notebook
The Battle Strategies Notebook (also known as the Warlord Parchments or the Battle Parchments) is a stack of parchments bound crudely into book form with hemp cords.
This smudged, crudely bound stack of parchments contains hundreds of what you can only assume are line diagram representations of battle formations. You cannot make very much sense of them at all.
They all seem ridiculously impractical.
The party finds this notebook inside the large chest in the Bard Library.