Sir F. H. Sykes, who served as Chief of the Air Staff and Controller-General of Civil Aviation, structures his account around three chronological sections: pre-war development, wartime application, and peacetime prospects. The book opens with the claim that aviation has revolutionized warfare more swiftly than any invention since gunpowder, yet Sykes immediately balances this with a reminder that aircraft also serve peaceful ends. The text moves between technical description—such as the B.E.2c's role in home defence—and personal recollection, as when Sykes recalls the anxiety of waiting for seaplanes to return from a torpedo attack in the Gulf of Xeros. This alternation between strategic overview and specific incident gives the work a dual character: part official history, part memoir.

From Balloons to Battle: Pre-War Foundations

Sykes traces the early history of flight from balloons through gliders to the Wright brothers and their European successors. He emphasizes the slow integration of aircraft into British military forces, noting the establishment of the Balloon Factory, the Air Battalion, and finally the Royal Flying Corps with its separate Military and Naval Wings. The author treats the pre-war period as a time of experimentation, where tactics and machines were still being defined. He observes that the principles of warfare remained unchanged even as methods evolved, a theme that recurs throughout the book. The section ends with conclusions drawn from this formative era, though the excerpts do not reveal their content.

War in the Air: Co-operation and Combat

The wartime section is organized by operational role: co-operation with the army (reconnaissance, photography, wireless, bombing, contact patrol, fighting) and with the navy (coast defence, convoy work, fleet assistance, spotting, torpedo attack). Sykes provides concrete details, such as the Sunbeam seaplane fitted with a 14-inch torpedo at Jutland, and the use of B.E.2c's in home defence squadrons. He describes the evolution of countermeasures against Zeppelin raids, including the formation of a continuous aeroplane and searchlight barrage between Dover and the Forth, and the interception of wireless signals. The narrative is grounded in specific dates and locations—the first German bomb near Dover on December 21, 1914, the destruction of Zeppelin L.Z.38 after its raid on London on May 31, 1915, and Leefe Robinson's victory at Cuffley in September 1916.

Night Flying and the Shifting Defence

A recurring structural element is the treatment of night operations as a distinct challenge. Sykes notes that the first German night raid over England occurred in 1915, and that systematic training of night pilots, standardization of equipment, and lighting of aerodromes were only taken in hand in 1916. He charts the escalation from airship to aeroplane raids, describing the midday attack of seventeen aeroplanes on June 13, 1917, and the eventual expansion of home defence to fourteen service and eight night training squadrons. The author also highlights the strategic aim of German raids: to force the retention of a large air defence force in Britain. This section shows how the book's structure mirrors the tactical adaptation it describes.

Peace and the Unseen Horizon

In the final section, Sykes turns to civil aviation as a factor in national security and imperial progress, addressing financial and economic problems, weather conditions, and night flying. He argues that air supremacy will be achieved by the nation that is commercially the greatest in the air, just as British naval supremacy was built on seafaring trade. The text mentions British, Continental, and Imperial air services, but the excerpts do not detail his proposals. The author's tone remains cautious: he acknowledges that aviation's future power can only dimly be seen, and that its destructive potential must be accepted alongside its peaceful uses. This forward-looking perspective is grounded in the wartime experience that precedes it.

Sykes writes as a practitioner who helped shape the events he describes. Readers should note that the book's value lies less in its predictions—many of which are necessarily speculative—than in its detailed account of how aircraft were integrated into military operations between 1914 and 1918. The author's firsthand observations, such as the anxious wait for returning seaplanes, give the work a personal dimension that official histories often lack. Those interested in the technical and organizational evolution of air power will find a wealth of specific information, though the book's brevity means that many topics are only introduced rather than exhaustively treated.