It was announced last week that former Defense Secretary Donald Rumsfeld has moved into the realm of app developing.

The 83 year old former defense secretary has released a new video game titled Churchill Solitaire. According to the Wall Street Journal, the game is based on a game that Rumsfeld had learned four decades ago in Brussels. The game will be coming to iPads and iPhones all over the world.

The game itself is modeled after a card game that former British Prime Minister Winston Churchill would play during World War II. The story behind the game is that Churchill would use the game to improve his strategic thinking when it came to wartime strategies.

When interviewed by the Wall Street Journal, Rumsfeld went on to say:

There is no question it is a game that requires you to be strategic, to look around corners, to think ahead, and to never give in-which is the phrase Churchill would have used.

The game will be free on iOS, however there will be in app purchases for hints and undoing moves in the game. The game is now available on iTunes and will be coming to Google Play at later point. All the profits the game generates will be donated to charity.