Cats have achieved remarkable heroism in major wars, and contributed to saving many lives. Cats were often greeted on warships, barracks and field offices informally to help control rodents.

To relieve stress and trauma and depression of war, cats found themselves given a key function in armies as an "amulet" to bring good luck, and sometimes as a tool that could be used to perform some simple tasks. Here are some examples of cats playing important roles in major Wars: World War II, the Crimean War, Stalingrad and more.