I had recognized the great difficulty of mobilizing with the clockwork precision of older units and, in the belief that war was coming, had ordered a provisional mobilization of the Corps some days before it was actually declared. Thanks to this step and to the work done at our Concentration Camp at Netheravon in June, 1914, the greater part of the Royal Flying Corps was enabled to concentrate without hitch at our aerodrome at Dover, and the machines flew via Calais to Amiens on August 13th.
Co-operation with the Army.
Reconnaissance.
In the event of France and England declaring war concurrently against Germany, the strategic plan agreed to by the British and French general staffs before the war had been that the British Expeditionary Force should be moved to the Le Cateau, Maubeuge, Mons, area and take up a line on the left flank of the French Army near Mons. But England had withheld her declaration until three days after the French, and on landing in France the first words I heard said by a Frenchman were: "Oui, l'armée anglaise arrive mais on a manqué le premier plan." It was not until after the arrival of G.H.Q. at Amiens on August 14th that, although late, it was decided that the advanced line should be taken up. The Royal Flying Corps moved by air and road to an existing aerodrome outside the antique defences of Maubeuge 12 miles from Mons on the 16th. On the 19th the first reconnaissance was carried out, and the entire country over which the German armies were advancing, as far as Brussels and Louvain, was kept under observation. One of the best reconnaissances ever made was that of August 21st, which discovered the 2nd German Corps moving from Brussels through Ninhove and Grammont.
From Maubeuge we had to retire on the 24th to Le Cateau, on the 25th to St. Quentin, on the 26th to La Fère, on the 28th to Compiègne, on the 30th to Senlis, on the 31st to Juilly, on September 2nd to Serris, on the 3rd to Touquin, on the 4th to Melun, where we were thankful at last to get orders again to advance on the 7th to Touquin, and on the 9th to Coulommiers, reaching Fère-en-Tardennois on the 12th for the Battle of the Aisne.
Of the many recollections of the early days one which will remain longest in my mind is the terrible sadness of the flocks of refugees, of the poor people we left behind. And the glare of villages burning by the hand of the Boche. It was indeed war.
Valuable reconnaissances were made during the whole Retreat from Mons to the Marne in spite of the tremendous difficulties involved by constant movement, transport, and the selection of new landing grounds, but, in the words of Sir John French, "It was the timely warning aircraft gave which chiefly enabled me to make speedy dispositions to avert danger and disaster. There can be no doubt indeed that even then the presence and co-operation of aircraft saved the very frequent use of cavalry patrols and detailed supports." The Royal Flying Corps was an important factor in helping the British Expeditionary Force to escape von Kluck's nearly successful efforts to secure another and a British Sedan.
The reconnaissance resulting in the most valuable information of all, and, I think, during the whole of the war, was that of September 3rd, during the critical operations on the Marne, which formed one of the decisive battles in the world's history, when von Kluck's turning movement to the south-east against the French left was accurately reported and Marshal Joffre was enabled to make his dispositions accordingly. "The precision, exactitude and regularity of the news brought in," he said in a message to the British Commander-in-Chief, "are evidence of the perfect training of pilots and observers." The reports of the German air service, on the other hand, would appear from von Kluck's movements to have been of no assistance to him.
The system adopted from the first was for the pilot or observer, or both, immediately on their return to bring their report to R.F.C. Headquarters, whence the Commander, or his staff officer, accompanied them to G.H.Q., where the map was filled in in accordance with the report. G.H.Q. could then ask questions and obtain any further information which the observer could give, while R.F.C. Headquarters could ascertain what further reports were most urgently required. The form of the reports, which were ready printed, had been most carefully thought out at R.F.C. Headquarters in peace and experimented with at the Concentration Camp.
The maps thus compiled at G.H.Q. from air reconnaissance reports between August 31st and September 3rd were of vital interest, though it was sometimes very difficult to get the information put on the map for prompt consideration. For instance, at Dammartin on the evening of September 1st, when it was thought that German cavalry were within a few miles, G.H.Q. made a very hurried departure, and I was unable to find anyone to whom to give very important reports.