There was one British aviator in particular whose reckless daring shone conspicuously even above that of his fellows, and who on the occasion showed an utter disregard for life. One of his major operations was to fly over a body of German troops on the march. Hovering at a short distance above them, he sprayed the astonished troops with machine-gun fire until they scattered and fled. Passing joyously on his way, the aviator encountered a convoy and flying low poured volleys into the Germans and was gone before they had time to recover from their astonishment and retaliate. Near Warneton a large force of German troops was massing to attack when down among them dashed the aviator, his machine gun crackling, when they dispersed in all directions, leaving dead and wounded on the field. Another daring young flyer belonging to the Royal Flying Corps attacked and silenced four machine-gun teams in strong emplacements. Other British aviators were active in clearing out trenches of their German occupants, and when they ran out of ammunition for their Lewis guns hurled down on the enemy bombs, explosives, and anything that injures or destroys. By the British capture of Messines Ridge the Germans lost their last natural position that commanded the British lines. The victory came as a fitting climax to the British achievements in France during the preceding three months' campaign. By the capture during that period of Bapaume, Vimy Ridge, Monchy Plateau, and now Messines Ridge, the British had completely changed the military situation on the western front. The area gained in this vast operation was a front nine miles long to an extreme depth of five miles. Owing to strong German pressure exerted at this point the advance was checked, but the British continued to engage and harass the enemy in minor operations. During the night of June 8, 1917, the British resumed activities in the neighborhood of the great mining center of Lens. An attack was launched south of the Souchez River on a front of two miles, penetrating to a depth of half a mile. On the following day the Germans with strong forces delivered a determined assault on British lines on a front of six miles east of Messines. The attack failed. South of Lens the Canadians on the same date pierced the German lines on a front of two miles, destroying defensive works and taking a number of prisoners.