Freyberg is closely associated with the controversial decision to bomb the ancient monastery at Monte Cassino in February 1944. Freyberg, commanding the troops which fought what later became known as the Second and Third Battles of Monte Cassino, became convinced the abbey, founded in 529 AD, was being used as a military stronghold. The analysis of one of Freyberg's divisional commanders, Major-General Francis Tuker of the 4th Indian Infantry Division, concluded in a memo to Freyberg that, regardless of whether the monastery was occupied by the Germans, it should be demolished to prevent its occupation. He pointed out that with -high walls made of masonry at least thick, it was impossible for engineers to break in and that bombing with "blockbuster" bombs would be the only solution since bombs would be "next to useless". General Sir Harold Alexander, commander of the 15th Army Group (later the Allied Armies in Italy), agreed to the bombing (which did not employ blockbuster bombs). After the monastery's destruction, the ruins were occupied by German forces, which held the position until 18 May. Following the war, the abbot of the monastery and other monks said that German troops had not occupied the inside of the abbey and it was not being used for military purposes.