Ya in a nut shel thats it aparently, they were developed out of a nead to atack directly fortified Japanese posations being encountered by the British in the far east (Burma), convential artilary was often dificult or imposable to manuaver into posation and these things were far easer and cost efective ways of bringing Bunkers to a quick end. Two men were all that was required to service the weapon, one ported the tub and another the rocket. Aparently they were very inacurate, 5 shots (rockets) often was nescessary even at 50 yards to inshure a good hit, bunkers of up to 10 feet of reinforced material cound be buggered if hit right with one of these things. On Okinawa a US vershion was employed.
