Today in World War II History—April 1, 1944

Adm. Sir Bertram Ramsay, Allied Naval Commander-in-Chief of the Expeditionary Forces, at his London Headquarters at Norfolk House, 1944 (Imperial War Museum)
75 Years Ago—April 1, 1944: Countdown to D-day: Adm. Sir Bertram Ramsay (Allied Naval Commander, Expeditionary Force) takes operational control of US naval forces for D-day.
Allied Combined Bomber Offensive officially ends as Allies achieve air superiority over Europe.
US Fifteenth Air Force based in Italy begins operations to evacuate partisans, women, and children from Nazi-occupied Yugoslavia.

B-17s of the US 3rd Bombardment Division over Europe, WWII (USAF photo)