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Today in World War II History—Mar. 19, 1943

Gen. Henry H. “Hap” Arnold, circa 1945 (US Army photo)

Gen. Henry H. “Hap” Arnold, circa 1945 (US Army photo)

75 Years Ago—Mar. 19, 1943: German U-boats break off attacks on Allied North Atlantic convoys HX-229 and SC-122, ending the largest convoy battle of the war.

Henry H. “Hap” Arnold promoted to four-star general, a first for the US Army Air Force.