Western Allied invasion of Germany and Operation Undertone, occurred during which event?
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.
Convoy battles of World War II Convoy Battles of World War II occurred when convoys of cargo ships assembled for mutual defense, and were attacked by enemy submarines, surface ships, and/or aircraft. Most were in the North Atlantic from 1939 to 1943, and involved attacks by U-Boat wolfpacks. Convoy battles also occurred in the Arctic Ocean,Mediterranean Sea and western Pacific Ocean.