So the fortunes of the day were alternating, but at the end of it the position became clear. We had made and held all the ground that we intended. Then our men dug in, and the rain, which had begun on the afternoon of the battle, grew heavier. It has rained ever since. The ground is all a swamp and the shell-holes are ponds. The Army lies wet, and all the foulness of Flemish weather in winter is upon them in August. Through the mist the enemy's shell-fire never ceases, and our guns reply with long bombardments and steady barrages. The walking wounded come back over miles of churned-up ground, dodging the shells, and when they get down to the clearing-stations they are caked with mud and very weary. War is not a blithe business, even when the sun is shining. In this gloom and filth it is more miserable. The weather has been bad for flying men. Impossible, one would say, looking up at the low-lying storm-clouds. Yet on the day of battle our airmen went out and, baulked of artillery work, flew over the enemy's country and spread terror there. It was a flying terror which, when told in the barest words of these boys, is stranger than old mythical stories of flying horses and dragons on the wing. Imagine one of these winged engines swooping low over one as one walks along a road far from the lines, and above the roar of its engine the sharp crack of a revolver with a bullet meant for you. Imagine one of these birds hovering above one's cottage roof and firing machine-gun bullets down the chimneys, and then flying round to the front and squirting a stream of lead through the open door, and, after leaving death inside, soaring up into a rain-cloud. That, and much more, was done on July 31. These airmen of ours attacked the German troops on the march and scattered them, dropped bombs on their camps and aerodromes, flying so low that their wheels skirted the grass, and were seldom more than a few yards above the tree-tops. The narrative of one man begins with his flight over the enemy's country, crossing canals and roads as low as thirty feet, until he came to a German aerodrome. The men there paid no attention, thinking this low flier was one of theirs, until a bomb fell on the first shed. Then they ran in all directions panic-stricken. The English pilot skimmed round to the other side of the shed and played his machine-gun through the open doors, then soared a little and gave the second shed a bomb. He flew round and released a bomb for the third shed, but failed with the fourth, because the handle did not act quickly enough. So he spilt his bomb between the shed and a railway train standing still there. By this time a German machine-gun had got to work upon him, but he swooped right down upon it, scattering the gunners with a burst of bullets, and flew across the sheds again, firing into them at twenty feet. His ammunition drum was exhausted, and he went up to a cloud to change, and then came down actually to the ground, tripping across the