One day at Boulogne returning from leave after an uneventful channel crossing with some sort of Russian delegation, we had picked up our grips and started for the gangway, when the strains of a band on the dock became audible, and we could see a group of French officers waiting to meet the Russian delegates who were slowly filing down the gang plank. The band slowly played the Russian national anthem, and we all dropped our baggage and stood to attention. As the strains died away we again seized our grips and began to push forward when the band struck up the Marseillaise and again we dropped everything and stood to attention. After an interval of about ten minutes the last bars of the tune died away and for the third time we seized our things only to hear the strains of the British national anthem rising on the air. Again we dropped our stuff and smartly came to the salute like good loyal subjects though we heartily wished that the delegation had gone by the Archangel route, for we felt certain that the band would play the national anthems of Belgium, Japan, Serbia and Italy. However, like most things, it came to an end and we filed off after a delay of what had seemed to be a good half hour. It is strange how we were all keen to get back to the front to the work which we got so fed up with and would sometimes give the whole world to get away from. [Illustration: BRITISH TANKS AS USED IN THE FLANDERS OFFENSIVE.] The summer of 1916 was the period of the battle of the Somme and most of our interests hinged on that offensive. At the beginning of July the British began their big advance to the south and the fighting in our area consisted largely of trench raids, artillery bombardments, gas attacks, aeroplane raids and other events incidental to trench warfare. A spectacular show occurred when the offensive began and the enemy observation balloons, hitherto practically unmolested, were attacked by our airmen with some new incendiary device with the result that nine were brought down in a few minutes in flames and the others were quickly hauled to earth to remain there for many weeks. Only occasionally during the succeeding months would a captive balloon ascend and then would quickly disappear on the approach of one of our planes. Pens for German prisoners were under course of construction all along the front--a most satisfactory procedure from the psychological standpoint, as it seemed to express confidence in what the future was to bring. The capacity of the hospitals had also been increased from 540 to 1,000 beds, which also indicated business. The Canadians were still in the salient side by side with the Guards and the latter used to cheer "the fighting Canucks" as they called them, as they went into the trenches. The only regret of the Canadians at that time was that they did not have the "Immortal Seventh Division" on their other side.