35.2 KT5 - The war in the air, 1914-18

Enquiry Frame and Chronology

This Paper 3 depth enquiry asks you to explain how a new dimension of war developed in just
four years. Do not turn it into a list of aircraft names or heroic dogfights. The specification
is asking about three connected developments:

The word air power is important. It does not only mean bombing from the sky. In the First
World War it included the use of aircraft and airships to gather information, prevent the
enemy gathering information, direct artillery, attack troops and transport, defend cities, and
shape public morale.

Keep this chronology in view:

At the same time, Britain itself came under air attack:

The strongest overall argument is therefore one of rapid change. Air power began as an
uncertain auxiliary to armies and ended as a necessary part of modern warfare, but it did not
make older forces irrelevant. It made artillery more accurate, command more informed,
defence more complicated and civilians more vulnerable.

Reconnaissance and Battlefield Knowledge

The first major impact of aircraft was reconnaissance: finding out what the enemy was
doing. This sounds simple, but on the Western Front it was revolutionary. Once trench lines
stretched from the Channel to Switzerland, cavalry patrols could no longer ride freely behind
enemy lines. Ground observers could see only so much from church towers, balloons or
forward posts. Aircraft offered a way to look over the trenches and report on roads, railways,
troop movements, gun positions, reserve trenches and supply areas.

In August and September 1914 the RFC's reconnaissance was still improvised. Pilots struggled
with weather, unreliable engines, poor maps and unfamiliar landscapes. Yet even imperfect
reports mattered. During the opening campaign, British commanders gained information about
German movement and Allied positions that could not easily have been obtained from the
ground. The lesson was clear: aircraft could turn the empty space beyond the front line into a
field of information.

Observation developed in three main forms:

The difference between visual and photographic reconnaissance is important. A visual report
could be quick, but it was fragile. An observer might misidentify troops, miss camouflaged
positions, be distracted by enemy aircraft, or fly too high to see detail. A photograph could be
studied repeatedly, compared with older photographs, marked up by interpreters and used for
planning. It did not remove uncertainty, but it made battlefield knowledge less dependent on a
single hurried memory.

Photography became especially significant once trench warfare hardened. At Neuve Chapelle
in March 1915, aerial photographs helped planners identify German positions. By the Somme
in 1916, the demand for photographs had grown enormously. The process was still difficult:
cameras were heavy, plates could fail, weather could spoil results, and interpretation required
training. But the direction of change was clear. The air arm was becoming an intelligence
system, not just a collection of pilots.

Communication was the hardest part to make useful. An aircraft could see a target, but that
was not enough. The information had to reach the guns or headquarters in time to matter.
Early methods included written messages dropped from aircraft, signal lamps and visual
signals. Wireless telegraphy became increasingly important, especially for artillery
cooperation. The aircraft did not usually receive wireless replies at first; it sent corrections
to the battery as shells landed. This meant pilots and observers needed standardised codes,
maps and procedures.

Artillery cooperation shows why air reconnaissance had such a large impact. In industrial
warfare, artillery caused much of the killing and destruction. Guns also had to be used
accurately: destroying wire, neutralising machine-gun posts, suppressing enemy batteries and
blocking counter-attacks. Aircraft could spot enemy gun flashes, observe where British shells
landed, and correct fire. By 1918, aerial reconnaissance, sound ranging and flash spotting
together allowed British counter-battery work to become far more effective than it had been
in 1914-16.

There were still limits:

The key judgement is that aerial reconnaissance changed the quality of command. It did not
give generals perfect knowledge. It gave them a new and increasingly systematic way to see
the battlefield, plan attacks and direct fire. That made air power deeply connected to the
development of artillery and modern command.

From Observers to Fighting Force

The Royal Flying Corps did not begin the war as a powerful fighting force. Its original purpose
was to support the army, especially through reconnaissance. When the RFC went to France in
August 1914, it was small, technically fragile and dependent on aircraft that were not designed
for a long industrial war. The transformation into a fighting force happened because
reconnaissance became too important to leave undefended.

The logic was simple:

This is why "dogfighting" should not be separated from the land battle. Fighter combat did
not develop merely because pilots wanted to duel. It developed because each side needed to
protect its own reconnaissance and artillery aircraft while denying the enemy the same
advantages.

Early air combat was improvised. Pilots and observers used pistols, rifles, carbines, hand
grenades and awkwardly mounted machine guns. The major breakthrough was the ability to fire
a machine gun forward through the propeller arc using interrupter or synchronising gear. The
German Fokker Eindecker used this effectively in 1915, creating what British airmen called the
"Fokker scourge". The Fokker was not a perfect aircraft, but its fixed forward-firing gun made
it dangerous because the pilot could aim the whole aircraft at the target.

Britain responded with new aircraft and tactics. Pusher aircraft such as the Airco DH2 placed
the propeller behind the pilot, allowing a forward-firing gun without synchronising gear. Later
British fighters, including the Sopwith Camel and the Royal Aircraft Factory SE5a, offered
better speed, manoeuvrability and firepower. Two-seat aircraft such as the Bristol Fighter
showed that reconnaissance and combat roles could overlap: an aircraft could fight while still
performing army cooperation duties.

The RFC also became more organised. Hugh Trenchard became General Officer Commanding of
the RFC in France in 1915. His approach emphasised offensive action: British aircraft should
cross the lines, fight over German-held territory and make German observation difficult. In
September 1916 he set out a policy of continual attack. The logic was that aircraft could not
defend every point of the front from behind British lines; instead, they had to pressure the
enemy in the air.

This offensive policy had strengths and weaknesses:

"Bloody April" in 1917 shows both the importance and cost of this policy. During the Arras
offensive, the RFC supported the army but faced highly effective German fighters, including
Albatros machines, often operating over their own lines. British losses were severe. Yet the
RFC continued to fly because the army needed reconnaissance, photography and artillery
cooperation. The lesson was not that air power had failed. It was that air superiority depended
on technology, training, numbers, tactics and the ability to replace losses.

The development of the RFC as a fighting force therefore came from integration. By 1918 it
was not just a scouting service. It had fighter squadrons, reconnaissance squadrons, bombing
units, training systems, photographic specialists, wireless procedures, ground-attack tactics
and links to artillery headquarters. Its fighting role grew out of the need to make all these
support roles possible under enemy pressure.

Technology, Training and Air Combat

Technology was central to the development of air combat, but it did not work by magic. New
machines only mattered when pilots, observers, mechanics, commanders and factories could
turn them into reliable fighting power.

The main technological developments were: