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The Battle Memory (Japanese: たたかいのきおく Fight Memory) is a key item in Mother 3. It is obtained in Osohe Castle in Chapter 2. It can be used to keep track of enemies that have been fought, and can view the different battle sprites for enemies. It is also possible to battle enemies in the Battle Memory from the device itself. The enemies have infinite HP, but do not attack, although HP and PP are still depleted from the characters. The Trivia Cards can also be used on human enemies here as well. In the Mother 3 fan translation, if every enemy is in the Battle Memory, it will display a silver star. If all of the front and back sprites are in the Battle Memory, it will display a gold star instead.