The Jesstopian Defense Department was formed on November 28, 1859, when Jesstopia formed its official armed forces treaty that outlined the new requirement for the Department Of Defense

The defense department oversees operations of the Jesstopian armed forces at the direction of the President Of The United States Of Jesstopia. The role of the Defense Department is to respond to threats against the United States Of Jesstopia, its allies and to mobilize military aid, troops and weaponry, whenever and whereever the President needs it.