Lorraine Campaign and Operation Undertone both occurred during which war?
Operation Undertone Operation Undertone was a large assault by the U.S. Seventh and French 1st Armies of the U.S. Sixth Army Group as part of the Allied invasion of Germany in March 1945 during World War II.
Operation Accumulator Operation "Accumulator" was an Allied naval operation near the Channel Islands on the night of 12/13 June 1944, in support of Operation "Overlord", the invasion of France.