Operation Diademとは 意味・読み方・使い方

Operation Diadem, also referred to as the Fourth Battle of Monte Cassino was an offensive operation undertaken by the Allies (U.S. Fifth and British Eighth Armies) in May 1944, as part of the Italian Campaign. It was launched at 2300 Hours on 11 May 1944 to break the German defenses on the western half of the Winter Line and open up the Liri Valley, the main route to Rome. General Harold Alexander, the overall Allied army commander in the Italian theater, planned Diadem and the supporting air attacks of Operation Strangle to roughly coordinate with the invasion of northern France on 6 June 1944 in order to tie down the maximum number of German divisions in Italy, thus preventing them being employed against the invasion forces on France's coast.