The Prussian doctrine of war. The Serajevo murders. Austria and Serbia. Germany refuses mediation and makes war on Russia and France. Great Britain declares war, August 4, 1914. The cause of civilization. The German plan of campaign. The British army in France. Mobilization of Royal Flying Corps. The Aircraft Park. The squadrons. List of officers of the four squadrons. The machines. Amiens. Maubeuge. Flying Corps fired on by British troops. Union Jack markings. The German wheel through Belgium. French strategy. The retreat from Mons. First aerial reconnaissances. The reconnaissances of August 22. Sergeant-Major Jillings wounded in the air. Lieutenants Waterfall and Bayly brought down. Aerial reconnaissance on its trial. Early mistakes. List of places occupied by H.Q., R.F.C., during retreat. German movements observed. A typical air report. The western wind. The finding of Sir Douglas Haig. Help to General Smith-Dorrien at Le Cateau. The detection of enveloping movements. The British army escapes from von Kluck. Von Kluck wheels towards the Oise. His change of direction observed from the air. One of the reports. British retreat continues. The Sixth French Army on the Ourcq. Summary of British aerial work during the retreat. Alarms. Experiences of pilots. High spirits. Early bomb-dropping. First German machine seen by British at Maubeuge. Fighting in the air. German machines brought down. The battle of the Marne. Machines assigned to corps commands, September 6. Observation of the battle. Advance of headquarters to Fere-en-Tardenois. General Joffre's thanks to the Flying Corps. Storm of September 12. The battle of the Aisne. Adventure of Lieutenants Dawes and Freeman. Position warfare. Artillery observation. Wireless--Lieutenants Lewis and James. An early wireless message. The clock code. Popularity of wireless. Photography. The dropping of darts. German 'Archies'. The race for the sea. British army moves north; Flying Corps shifted to St. Omer. No. 6 Squadron arrives. Strategic reconnaissance. Long-distance flights. The battle of Ypres. Union Jack marking abolished. Photography and wireless. Earlier methods of ranging. Their inferiority. Fighting quality of British aeroplanes; German prisoners' evidence. The losses of Ypres. Withdrawal of German troops observed from the air. Sympathy of Flying Corps for the infantry. The German officer and his pilot. CHAPTER VII. The Royal Naval Air Service in 1914. pp. 357-409