The 155mm Long Tom was a particularly good gun and used by the British as the equipment for half the batteries in each heavy Regiment. It was about the only allied artillery piece with the range to match the long ranged German guns deployed at Army and Corps level. Post war the 175mm M107 filled this role and has only been replaced with MLRS. The British had put much effort into developing heavy artillery post WW1 as there was an assumption that a bomber aircraft would be more effective. Britain went to war with WW1 era heavy guns.