The Army's New Rocket Weapon -- One of the war's most devastating weapons is now being used by British and Canadian troops on the Western Front - the rocket barrage. The barrage is laid down by a group of 12 rocket projectors; each has 32 barrels. This gives a concentrated and devastating fire power comparable with that of 200 5.5inch guns firing 100lb shells. But whereas a battery of 200 5.5 inch guns would need a crews ***** 3,000 men, the tocket battery needs fewer then 200. February 1, 1945. (Photo by British Official War Office Photo).