Colonel René Paul Fonck (27 March 1894 – 18 June 1953) was a French aviator who ended the First World War as the top Entente fighter ace and, when all succeeding aerial conflicts of the 20th and 21st centuries are also considered, Fonck still holds the title of "all-time Allied Ace of Aces". He received confirmation for 75 victories (72 solo and three shared) out of 142 claims. Taking into account his probable claims, Fonck's final tally could conceivably be nearer 100 or above. He was made an Officer of the Legion of Honor in 1918 and later a Commander of the Legion of Honor after the war, and raised again to the dignity of Grand Officer.
Fonck was born on 27 March 1894 in the village of Saulcy-sur-Meurthe in the Vosges region of north eastern France. Fonck left school when he was 13.
Although he had been interested in aviation from his youth, he was rejected for the air service when conscripted on 22 August 1914. Instead, he underwent five months basic training for the role of combat engineer; his training duties included first digging trenches near Épinal, and later bridge repairs on the Moselle River.
On 15 February 1915 he was finally accepted into basic training to learn how to fly. He trained at St. Cyr and then at Le Crotoy on a Blériot Penguin, a reduced-wingspan "flightless" version of the famous Blériot XI aircraft that gave the sensation of flying while still on the ground. He completed his pilot training in May 1915 and then flew Caudron G III observation aircraft with Escadrille C 47.
On 25 May 1916 Fonck's observer was killed by an anti-aircraft shell burst, a fate that almost befell Fonck a few weeks later. Fonck claimed his first enemy aircraft in July 1916, but his victory was unconfirmed.
On 6 August, he attacked a German Rumpler C.III, and by maneuvering over and around the reconnaissance plane, staying out of its fields of fire, forced it lower and lower until the German crew landed behind French lines. It was his first verified victory, though shared with his observer, Lieutenant Thiberge. It brought him the Médaille militaire in late August 1916.
On 17 March 1917, Fonck scored a second time, downing an Albatros in conjunction with his observer, Sergeant Huffer. By this time, Fonck had amassed over 500 hours flight time, an incredible amount in those early days of aviation.
Aged 23, on 15 April 1917 ("Bloody April"), Fonck received a coveted invitation to join the famous Escadrille les Cigognes. Groupe de Combat 12, with its four escadrilles (or squadrons), was the world's first fighter wing. The then leading French ace, Georges Guynemer, was serving at the time in one of its escadrilles, N3, and had just scored his 36th victory.
Fonck was assigned to another escadrille in the group, Spa 103. Flying the SPAD VII, he quickly made a name for himself, attaining flying ace status by 13 May. He picked off another target on 12 June, then went on hiatus until 9 August. He scored twice more that month, on 21 and 22 August.
On 14 September, he killed the pilot of a German observation plane and watched as the plane inverted and dropped the thrashing observer almost through the wing of Fonck's Spad. He even went to the extreme of tearing the barograph out of the cockpit of that day's victim, his twelfth, so its readout would confirm his combat report. On 30 September, he and Adjutant Dupre jointly shot down a German two-seater Rumpler C.IV 6787/16 of FA 18. The news reported the killed pilot to be Leutnant Kurt Wissemann, who had allegedly shot down Guynemer, and that Fonck had boasted of avenging the death of his "good friend". This story is put into question by German records, indicating that Wissemann of Jasta 3 had been killed two days before in a different fight, in which he was flying a single-seater, probably against No. 56 Squadron.
September and October added four victories apiece to Fonck's score. Thus, by year's end, he had raised his tally to nineteen, was commissioned an officer, and had received the Légion d'honneur.
Fonck got only better. Known for his clinical professionalism, he applied mathematical principles to combat flying, and his engineering knowledge regarding the capabilities of the aircraft he flew was unsurpassed by his fellow pilots. Fonck took few chances, patiently stalking his intended victims from higher altitudes. He then used deflection shooting with deadly accuracy at close range, resulting in an astonishing economy of ammunition expended per kill. More often than not, a single burst of less than five rounds from his Vickers machine gun was sufficient. His preferred method of aerial combat was not to engage into dogfights, but to carry out surgically merciless executions. He was also reputed to be able to spot enemy observation aircraft from very far away, where most other pilots would have perceived nothing.
Fonck, like France's leading ace, Captain Guynemer, flew a limited-production SPAD XII fighter, distinguished by the presence of a hand-loaded 37mm Puteaux cannon firing through the propeller boss. He is apparently credited with downing 11 German airplanes with this type of armament, called a moteur-canon. This was made possible by the gear-reduction version of the Hispano-Suiza V8 SOHC engine first used in that model of SPAD fighter. It offset the now-hollow propeller shaft above the crankshaft axis, and the 37mm cannon was mounted in the V space between the two rows of cylinders. Fonck would later fly the highly successful SPAD XIII, the first SPAD fighter model to use twin Vickers machine guns.
He did not add to his tally sheet until 19 January 1918, when he scored a double victory. February added another five, March seven more, and another three in April.
Then came a spectacular performance on 9 May. It was sparked by a disagreement between Fonck and two of his squadronmates, Edwin C. Parsons and Frank Baylies. Perturbed by Fonck's lectures on aerial success, the two Americans bet Fonck a bottle of champagne that one of them would shoot down an enemy plane before Fonck. Baylies took off despite hazy weather and shot down a Halberstadt CL.II. Back at the airfield, rather than pay off the bet, a sulky Fonck badgered the Americans to change the terms of the bet so that whoever shot down the most Germans that day would win. Lingering fog kept Fonck grounded most of the day. It was well into the afternoon before it cleared enough for him to take off at 1500 hours. Between 1600 and 1605 hours, he shot down three enemy two-seater reconnaissance planes. A couple of hours later, he repeated the feat. Understanding the importance of reconnaissance planes, with their potential to direct intensive artillery fire onto French troops, Fonck concentrated his attention upon them; six shot down within a three-hour span proved it.
He added a double victory on 19 May and five more in June. By now, he was shooting doubles frequently, and with 49 on his score sheet, he was rapidly closing in on Guynemer's record.
On 18 July 1918, he achieved another double, to bring his total to 53 and into a tie with Guynemer. The following day, he shot down three more enemy aircraft and surpassed the score of the legendary Guynemer, who had remained the leading French ace despite his death on 11 September 1917.
He added four more victories in August, raising his total to 60. Then, on 26 September, he repeated his feat of knocking down six enemy airplanes in a day, although this time three of his six victories were over Fokker D.VII fighters.