By means of a pre-arranged signal the spy arrived at the German trenches without being fired on by his compatriots, despite his khaki uniform and British-pattern shrapnel-helmet. Taken to the head-quarters' dug-out, he made his report to the Hun authorities, changed into German uniform, and left immediately afterwards for a new sphere of activity. So, once more, by the matter of a few hours, Konrad von Feldoffer escaped a well-merited death; while, through ignorance of the terrific preparations made for the blowing up of Messines Ridge, he had unwittingly done the Allies a good turn; for instead of withdrawing the troops the Hun commander had concentrated a thousand on the mined ridge in order to repel an infantry attack that threatened only in the minds of the German staff.