They progressed perhaps half a mile, without coming upon any soldiers, when at the brow of a hill slightly higher than the rest, they became aware of unwonted activity. A trench had been dug along the ridge, with great pits here and there to serve as bomb-proof shelters. Every time a head projected above the ridge, a storm of bullets showed that the enemy was well within rifle range. In fact, it was to dislodge the Germans that the present intrenchments were being made; machine guns would be mounted as soon as positions had been prepared.