Stick of the Fallen

The Stick of the Fallen, created by Jayfeather, marks the names of all the cats who died in the Great Battle: Applefur (NP), Toadfoot, Thistleheart, Swallowtail, Ferncloud, Sorreltail, Hollyleaf, Foxleap, Starlingwing, Shredtail, Redwillow, Firestar, Tallpoppy, Cedarheart, etc.

Bramblestar's Storm
The stick is mentioned by Bramblestar as something the apprentices use to memorize the names of the cats killed in the Great Battle. Dewpaw is memorizing the cats' names, how they died, etc.