Was Operation Diadem or the Battle of Cold Harbor fought during the Civil War?
Operation Diadem Operation Diadem, also referred to as the Fourth Battle of Monte Cassino or, in Canada, the Battle of the Liri Valley, was an offensive operation undertaken by the Allies of World War II (U.S. Fifth Army and British Eighth Army in May 1944, as part of the Italian Campaign of World War II. "Diadem" was supported by air attacks called Operation Strangle. The opposing force was the German 10th Army.
Stones River Campaign The Stones River Campaign of the American Civil War lasted from November 1862 to January 1863. The campaign was tactically a draw but was a strategic Union victory due to the Confederate retreat after the Battle of Stones River.