The first assault ( 11-12 May ) on Cassino opened at 23:00 with a massive artillery bombardment with 1,060 guns on the 8th Army front and 600 guns on the Fifth Army front , manned by British , Americans , Poles , New Zealanders , South Africans , and French .
The attack ( 11-12 May ) on Cassino started at 23:00 with artillery bombing with 1,060 guns on the 8th Army front and 600 guns on the Fifth Army front .