80 Years Ago—April 13, 1940: Second Battle of Narvik (Norway): British Royal Navy sinks eight German destroyers.
British troops land in Danish Faroe Islands for occupation duty under agreement with Danish governor.
75 Years Ago—Apr. 13, 1945: Soviets secure Vienna, Austria.
US B-29 fire raid on Tokyo burns 13 square miles in arsenal district and damages the Imperial Palace.