While many people remember the longstanding service of dogs in the military, many don't know that cats also played an important role in the first and second World Wars.
These brave felines proved to be fearless in the face of danger as they worked tirelessly to hunt and trap rodents in the trenches and on battleships.
During WWI, about 500,000 cats were employed by the British army to clear the trenches of mice and rats. The cats also saved thousands of lives by alerting troops to poisonous gas clouds.
While there are many impressive tales of heroic animals at war, none of them compare to the story of Unsinkable Sam...