German shells were "watering" the captured ground. Malcolm hardly noticed them. He had acquired the hardened campaigner's indifference to Fritz's "hate" that confidence in the knowledge of being on the winning side cannot fail to give. Overhead, British shells screeched on their way, as with mathematical precision they fell in the place appointed, to form a "barrage" through which neither German supports could advance nor defeated Huns retire without risk of being pulverized by the high-explosive missiles.