Suddenly, as he glanced to the left, Rollo's heart gave a tremendous thump. He had already ridden more than half-way past the rear of a masked German battery. There were perhaps a dozen guns placed in position behind a ridge. The weapons were trained for high-angle firing, while, to render them invisible from Belgian aircraft, they were screened by branches of trees. By the side of each field-piece was an armoured ammunition cart. The body of the vehicle was upturned to a perpendicular position, the shells being kept in place by a "pigeon-hole" arrangement. The gunners were "standing easy", while, from the tip of a neighbouring haystack, a number of officers were observing the Belgian position through their field-glasses.
Hearing the sound of the motor-cycle, several of the men turned and looked at the dispatch-rider, but they made no attempt to stop him. Evidently they thought he was one of their cyclists, for Rollo's uniform was smothered in grey dust, so that there was no perceptible difference between him and a motor-cyclist attached to the invading army.
Fortunately Rollo kept his head. Without slackening his speed he continued on his way until he was within two hundred yards of the nearest house in the village. Here he dismounted and began to rack his brains as to the best course to pursue.
He had fallen into a trap. Cortenaeken had been taken and was now in the possession of the enemy. He could see that several of the buildings were damaged by shell-fire. Unknown to himself he had ridden through the advanced German lines without any suspicion that thousands of men were concealed in the fields and thickets on either side of the road. The German left flank had been thrown forward a considerable distance, and their motor-scouts had been constantly in touch with the centre. Thus, by a pure fluke, Rollo had ridden through with a German motor-cyclist ten minutes ahead of him and another five minutes behind.
"I'll destroy the dispatch at once," decided the lad. "After that I'll try and ride back by the way I came. So here goes!"
He drew the petrol-soaked paper from the tank, and carried it to a dry ditch by the side of the road. The dispatch flared as soon as Rollo struck a match and set light to it. Its destruction was rapid and complete.