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Bloody April was the (largely successful) British air support operation during the Battle of Arras in April 1917, during which particularly heavy casualties were suffered by the
Royal Flying Corps The Royal Flying Corps (RFC) was the air arm of the British Army before and during the First World War until it merged with the Royal Naval Air Service on 1 April 1918 to form the Royal Air Force. During the early part of the war, the RFC sup ...
at the hands of the German ''
Luftstreitkräfte The ''Deutsche Luftstreitkräfte'' (, German Air Combat Forces)known before October 1916 as (The Imperial German Air Service, lit. "The flying troops of the German Kaiser’s Reich")was the air arm of the Imperial German Army. In English-langu ...
''. The tactical, technological, and training differences between the two sides ensured the British suffered a casualty rate nearly four times as great as their opponents. The losses were so disastrous that it threatened to undermine the morale of entire squadrons. The RFC contributed to the success, limited as it finally proved, of the British Army during the five-week series of battles.


Background

In April 1917 the
British Army The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
began an offensive at Arras, planned in conjunction with the French High Command, who were simultaneously embarking on a massive attack (the '' Nivelle Offensive'') about to the south. The
Royal Flying Corps The Royal Flying Corps (RFC) was the air arm of the British Army before and during the First World War until it merged with the Royal Naval Air Service on 1 April 1918 to form the Royal Air Force. During the early part of the war, the RFC sup ...
(RFC) supported British operations by offering
close air support Close air support (CAS) is defined as aerial warfare actions—often air-to-ground actions such as strafes or airstrikes—by military aircraft against hostile targets in close proximity to friendly forces. A form of fire support, CAS requires ...
, aerial reconnaissance and
strategic bombing Strategic bombing is a systematically organized and executed military attack from the air which can utilize strategic bombers, long- or medium-range missiles, or nuclear-armed fighter-bomber aircraft to attack targets deemed vital to the enemy' ...
of German targets. The RFC's
commanding officer The commanding officer (CO) or commander, or sometimes, if the incumbent is a general officer, commanding general (CG), is the officer in command of a military unit. The commanding officer has ultimate authority over the unit, and is usually give ...
, Hugh Trenchard believed in the offensive use of
air power Airpower or air power consists of the application of military aviation, military strategy and strategic theory to the realm of aerial warfare and close air support. Airpower began in the advent of powered flight early in the 20th century. A ...
and pushed for operations over German-controlled territory. It was expected the large numbers of aircraft assembled over the frontlines in the spring of 1917 would fulfil this purpose. However, the aircraft were, for the most part, inferior to German
fighter aircraft Fighter aircraft (early on also ''pursuit aircraft'') are military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter aircraft is to establish air supremacy, air superiority of the battlespace. Domina ...
. Crucially, British pilot training was not only poorly organised and inconsistent, it had to be drastically abbreviated to keep squadrons suffering heavy casualties up to strength. This was self-perpetuating, as it resulted in most new pilots lacking sufficient practical flight experience before reaching the front. German pilot training was, at that time, more thorough and less hurried than the British programmes. After the heavy losses and failures against the French over
Verdun Verdun ( , ; ; ; official name before 1970: Verdun-sur-Meuse) is a city in the Meuse (department), Meuse departments of France, department in Grand Est, northeastern France. It is an arrondissement of the department. In 843, the Treaty of V ...
in 1916 and against the British at the
Somme __NOTOC__ Somme or The Somme may refer to: Places *Somme (department), a department of France * Somme, Queensland, Australia * Canal de la Somme, a canal in France *Somme (river), a river in France Arts, entertainment, and media * ''Somme'' (book), ...
, they had reorganised their air forces into the ''
Luftstreitkräfte The ''Deutsche Luftstreitkräfte'' (, German Air Combat Forces)known before October 1916 as (The Imperial German Air Service, lit. "The flying troops of the German Kaiser’s Reich")was the air arm of the Imperial German Army. In English-langu ...
'' by October 1916, which now included Jastas, specialist fighter units. These units were led by highly experienced pilots, some of them survivors of the
Fokker Scourge The Fokker Scourge (Fokker Scare) occurred during the First World War from Kurt Wintgens#First victory using a synchronized gun, July 1915 to early 1916.Franks 2001, p. 1. Imperial German Flying Corps () units, equipped with (Fokker monoplane) ...
period. and had been working up with the first mass-produced twin-gunned German fighters, the Albatros D.I and D.II, comprising a total of nearly 350 aircraft between the two types. Paradoxically, the one sided nature of the casualty lists during Bloody April was partly a result of German numerical inferiority. The German air forces mostly confined themselves to operating over friendly territory, thus reducing the possibility of losing pilots to capture and increasing the amount of time they could stay in the air and choose when and how to engage in combat.Shores (1991) p. 14


Battle

The Battle of Arras began on 9 April 1917. The Allies launched a joint ground offensive, with the British attacking near
Arras Arras ( , ; ; historical ) is the prefecture of the Pas-de-Calais department, which forms part of the region of Hauts-de-France; before the reorganization of 2014 it was in Nord-Pas-de-Calais. The historic centre of the Artois region, with a ...
in
Artois Artois ( , ; ; Picard: ''Artoé;'' English adjective: ''Artesian'') is a region of northern France. Its territory covers an area of about 4,000 km2 and it has a population of about one million. Its principal cities include Arras (Dutch: ...
, northern
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
, while the French offensive was launched on the Aisne. In support of the British army, the RFC deployed 25 squadrons, totalling 365 aircraft, about one-third of which were fighters (or "
scouts Scouting or the Scout Movement is a youth social movement, movement which became popularly established in the first decade of the twentieth century. It follows the Scout method of informal education with an emphasis on practical outdoor activi ...
" as they were called at the time). There were initially only five German '' Jastas'' (fighter squadrons) in the region, but this rose to eight as the battle progressed (some 80 or so operational fighter aircraft in total). Since late 1916, the Germans had held the upper hand in the contest for
air supremacy Air supremacy (as well as air superiority) is the degree to which a side in a conflict holds control of air power over opposing forces. There are levels of control of the air in aerial warfare. Control of the air is the aerial equivalent of ...
on the Western Front, with the twin- lMG 08 machine gun-armed Albatros D.II and D.III outclassing the fighters charged with protecting the vulnerable B.E.2c, F.E.2b and
Sopwith 1½ Strutter The Sopwith Strutter is a British single- or two-seat Multirole combat aircraft, multi-role biplane aircraft of the First World War.Lake 2002, p. 40. It was the first British two-seat tractor configuration, tractor fighter and the first Briti ...
two-seater reconnaissance and bomber machines. The Allies' fighter squadrons were equipped with obsolete " pushers" such as the
Airco DH.2 The Airco DH.2 was a single-seat pusher biplane fighter aircraft which operated during the First World War. It was the second pusher design by aeronautical engineer Geoffrey de Havilland for Airco, based on his earlier DH.1 two-seater. The ...
and F.E.8 – and other outclassed types such as the
Nieuport 17 The Nieuport 17 C.1 (or Nieuport XVII C.1 in contemporary sources) is a French sesquiplane fighter aircraft, fighter designed and manufactured by the Nieuport company during World War I. An improvement over the Nieuport 11, it was a little large ...
and
Sopwith Pup The Sopwith Pup is a British single-seater biplane fighter aircraft built by the Sopwith Aviation Company. It entered service with the Royal Naval Air Service and the Royal Flying Corps in the autumn of 1916. With pleasant flying characteristi ...
. Only the SPAD S.VII and Sopwith Triplane could compete on more or less equal terms with the Albatros; but these were few in number and spread along the front. All four of the aforementioned Allied designs depended on just one synchronized
Vickers machine gun The Vickers machine gun or Vickers gun is a Water cooling, water-cooled .303 British (7.7 mm) machine gun produced by Vickers Limited, originally for the British Army. The gun was operated by a three-man crew but typically required more me ...
apiece, given cooling louvers on the cooling jackets for aviation use, for their armament on their airframe. The new generation of Allied fighters were not yet ready for service, although No. 56 Squadron RFC with the S.E.5 was working up to operational status in France, intended to use both the synchronized Vickers gun, and an overwing-mount Lewis machine gun firing above the propeller arc for a twin-gun offensive punch. The Bristol F2A also made its debut with No. 48 Squadron during April, but lost heavily on its first patrol, with four out of six shot down in an encounter with five Albatros D.IIIs of '' Jasta 11'', led by
Manfred von Richthofen Manfred Albrecht Freiherr von Richthofen (; 2 May 1892 – 21 April 1918), known in English as Baron von Richthofen or the Red Baron, was a fighter pilot with the German Air Force during World War I. He is considered the ace-of-aces of th ...
(popularly known as the Red Baron). The new R.E.8 two-seaters, which were eventually to prove less vulnerable than the B.E.2e, also suffered heavy casualties in their early sorties. During April 1917, the British lost 245 aircraft, 211 aircrew killed or missing and 108 as
prisoners of war A prisoner of war (POW) is a person held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610. Belligerents hold prisoners of war for a ...
. The German Air Services recorded the loss of 66 aircraft during the same period. As a comparison, in the five months of the Battle of the Somme of 1916 the RFC had suffered 576 casualties. Under Richthofen's leadership, ''Jasta 11'' scored 89 victories during April, over a third of the British losses. In casualties suffered, the month marked the nadir of the RFC's fortunes. However, despite the losses inflicted, the German Air Service failed to stop the RFC carrying out its prime objectives. The RFC continued to support the army throughout the Arras offensive with up-to-date aerial photographs, reconnaissance information, effective contact patrolling during British advances and harassing bombing raids. In particular the artillery spotting aircraft rendered valuable reconnaissance to the British artillery, who were able to maintain their superiority throughout the battle. In spite of their ascendancy in air combat, the German fighter squadrons continued to be used defensively, flying for the most part behind their own lines. Thus the ''Jastas'' established "
air superiority An atmosphere () is a layer of gases that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A stellar atmospher ...
", but certainly not the
air supremacy Air supremacy (as well as air superiority) is the degree to which a side in a conflict holds control of air power over opposing forces. There are levels of control of the air in aerial warfare. Control of the air is the aerial equivalent of ...
sometimes claimed.


Aftermath

Within a couple of months the new technologically advanced generation of fighter (the SE.5,
Sopwith Camel The Sopwith Camel is a British First World War single-seat biplane fighter aircraft that was introduced on the Western Front in 1917. It was developed by the Sopwith Aviation Company as a successor to the Sopwith Pup and became one of the b ...
, and SPAD S.XIII) had entered service in numbers and quickly gained ascendancy over the over-worked ''Jastas''. As the British fighter squadrons became once more able to adequately protect the slower reconnaissance and artillery observation machines, RFC losses fell and German losses rose. The RFC learned from their mistakes, instituting new policies on the improvement of training and tactical organisation. By mid-1917 better aircraft designs were reaching the front. By the late summer of 1917 the British achieved a greater measure of
air superiority An atmosphere () is a layer of gases that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A stellar atmospher ...
than they had held for almost a year. The casualties in the air campaigns through the remainder of the war were never so one-sided again. In fact, this was essentially the last time that the Germans possessed real air superiority for the rest of the war – although the degree of allied dominance in the air certainly varied, the final all-out efforts of September 1918 causing even greater Allied losses.


References


Bibliography

* * (A revised, expanded and more fully illustrated edition of Part One of the above book.) * * * * * * {{wwi-air Conflicts in 1917 1917 in France Aviation in World War I Aerial operations and battles of World War I Royal Flying Corps