Cancelled military operations involving the United States

Proposed false flag operation against the Cuban government that originated within the U.S. Department of Defense and the Joint Chiefs of Staff of the United States government in 1962

codename for the Allied plan for the invasion of Japan near the end of World War II

two plans commissioned by Winston Churchill for a war between the Western Allies and the Soviet Union in 1945

Planned World War II military operation

plan to invade Northern France in the spring of 1943

proposed invasion of Cuba

U.S. military contingency plan during the Vietnam War

Strategic debate during World War II