"Good-bye, lads, and good luck!" called the Squadron-Commander cheerfully, though at that very moment he was inwardly cursing his bad luck at having had his left arm seriously damaged in a recent crash. For of all things upon earth Major Bulford loved to lead his brave lads and to wheel them into action against the enemy squadrons.
"Whir-r-r! Whir-r-r!" went the first propellor, as the air-mechanic who had started it sprang back to safety. Then, one after another the machines of the three Flights taxied across the level ground of the aerodrome, and sprang into the air at the first movement of the elevator.
"Goodbye!" waved the pilots in answer to the last greeting of their chief, for the human voice could not carry two feet in that wild roar of propellors and engines, which seemed to make the whole atmosphere pulsate with a whirring sound.
After a few rapid spirals a height of two thousand feet was quickly attained, and then, still climbing, the 'planes, like huge birds of prey, disappeared for a while behind the British lines as though for a cross-Channel flight to England, in order to confuse the enemy observers. Then, by a wide sweep at seven thousand feet, the flights became detached, and each, under its own commander, went its own way by a circuitous route to the appointed station.
Dastral, with the four Sopwiths of "B" Flight, crossed the enemy's lines at nine thousand feet, somewhere between Ligny and Grévillers. As he did so he received his first baptism of fire from "Archie."
White puffs of smoke and fierce red jets of flame seemed to burst noiselessly around them, for the roar of the propellors drowned or subdued even the sound of the shrapnel as it exploded. Heedless of such small things, however, Dastral and his brave comrades sailed on, sometimes doing a spiral or a rapid nose-dive, if the enemy appeared to have found the range too closely.
Soon, however, they were ambushed in a friendly cloud, which hid them from the Huns far below, and when they had emerged from the clinging moisture, they were far beyond the enemy's third line trenches, and out into the open, with smiling fields and vineyards beneath them.
"Is that it?" yelled Dastral to his observer, jerking his head sideways, and pointing with his finger to something like a railway cutting far below.
"Yes. The Bapaume-Havrincourt railway line!" shouted his companion through the speaking-tube which ended close to the pilot's ear, for although only a few feet away, that was the only possible method of communication without shutting off the engines.
"Good!" nodded the pilot, for, despite the speaking-tube, conversation was chiefly carried on by well understood cabalistic signs.