Vertical photographic-reconnaissance aerial of a flying-bomb launch site under construction at Bois Carre, near Yvrench, discovered and documented by the agents of the Réseau AGIR.
The Réseau AGIR was created by Michel Hollard in 1941.[4] The espionage network had no contact with other French resistance groups and reported directly to the British Secret Intelligence Service (S.I.S.).[5]
During the war, the network was codenamed "Z 165" after the codename given to Hollard himself by the Intelligence Service. AGIR or Réseau AGIR only emerged after Hollard's return from the Liberation of France.[6][7][8]
Early 1941, Hollard became the concessionaire for the Seine department for the "Maison Gazogène Autobloc", headquartered in Dijon, that, among other things, produced wood gas generators for automobiles and supplied its clients with charcoal. Hollard was allowed to travel in search of wood nationwide and purchase wood to turn it into charcoal to preserve the increasingly scarce fuel in occupied France.[9]
In 1941, Hollard traveled to the French Free Zone and crossed the Swiss border for the first time to offer his services as a spy to the British embassy in Bern. He was greeted icily despite intelligence about France's wartime automotive manufacturing capabilities that he had brought with him to show his goodwill.[10] When he came back a month later, the second meeting was much warmer since the British military attaché had made the necessary checks about him. Hollard was tasked to report the position and description of the German forces in the French Occupied Zone, especially the armored divisions.[11] He committed to delivering intelligence every three weeks.[12]
His job enabled him to travel around France using his job as a cover. Mostly traveling by train, he primarily established contacts with railway employees who, due to their work, had knowledge of the occupying forces' activities or knew how to obtain it.
From the very beginning, Hollard insisted that all actions should be organized through personal contacts only and that the exchange of researched material should only be forwarded or handed over to him personally. He distrusted the means of communication, such as the telephone or even radio, and saw in it a source of vulnerability for the network for the enemy.[13] AGIR used signals with basic code like e.g. an open barn door indicated a Swiss border clear of soldiers.[14] Entirely self-sufficient, the network did not rely on parachute drops or wireless transmitters. Intelligence was collected and sent to Switzerland every 3 weeks.[15]
Hollard paid for the AGIR expenses, out of his pocket, until the British intelligence recognized the importance of the information collected by the network and offered to finance it.[16] The network could rely on safe houses to cross the Swiss border and a safe place near Compiègnes disguised as a peat-based fuel factory next to a bog in the marshes of the river Oise.[17]
Early 1942, Hollard had recruited a total of 6 agents, distributed throughout the Occupied Zone, to report the movement of German forces as requested by the British. All of them were personally financed by Hollard.[18] The network could also rely on volunteers to gather information on German facilities like aerodromes and factories. Railway employees and station masters also played an important to report changes in enemy positions.[15] When the Zone libre was placed under German military administration in November 1942, the network needed to grow to gather information in the whole of France. Hollard recruited hotel personnel and domestic workers working in requisitioned hotels or private houses to cater to German troops.[19]
On 30 juin 1942, Réseau AGIR member Olivier Giran was captured in Dijon, later transferred to the Fresnes prison and executed in April 1943 in Angers.[3][20][21][22]
The network was composed of about two hundred agents and informants at its peak, among which French poet Robert Desnos.[4][2][7] Arrested by the Gestapo on 22 February 1944, Desnos provided information collected during his job at the journal Aujourd'hui and made false identity papers.[30]
In total, 20 agents and informants of Réseaux AGIR were arrested, 4 executed and 17 died in or as a result of deportation.[6]
AGIR prepared a more detailed report in October about Bois Carré, which is located 1.4 km east of Yvrench,[40] that claimed it had "a concrete platform with the center axis pointing directly to London".[27][41] AGIR reconnoitered 104 V-1 facilities and helped pinpointing the Watten bunker, the first V-2 launching site.[23][42]
AGIR also provided sketches of V-1 launching sites such as one by André Comps of Bois-Carré.[43][44][27] It was labeled "YvrenchB2" to deceive the Germans. "B" stands for "Bois" in French and "2" stands for the square root which in French is "Carré", hence Bois-Carré. Hollard had the site infiltrated by Comps, who worked as a drafter and copied "the blueprints"— a copy of the compass swinging building blueprint and the Bois-Carré sketch were published in 1978.[45][39][46]
At the same time, André Bouguet, SNCF station director and AGIR informant, noticed transports that led north via Rouen. The destination of these transports was the Auffay train station.[47] With the help of René Bourdon, the station manager there, and his assistant Pierre Carteron, Hollard was able to penetrate a shed of the local sugar factory in which the transported V-1 were stored, hidden under a tarpaulin and made precise dimensional sketches of the devices.[48] The S.I.S. found an astonishing resemblance to Danish Lt-Colonel Hasager Christiansen's sketch that he had made of an aircraft that crashed on Bornholm on 22 August 1943.[49][50]
Thanks to Hollard's reports and information from his agents of the Réseau AGIR, the V1 launch sites located in the North of France, across North-Eastern Normandy to the Strait of Dover, were systematically bombed by the Royal Air Force between mid-December 1943 and March-end 1944, as a part of the Operation Crossbow. Nine V1 sites were destroyed, 35 badly damaged and partially damaged another 25 out of the 104. As a result, the Germans changed their strategy and started building lighter and more camouflaged positions.
In his book Crusade in Europe General Eisenhower wrote that had the Germans been able to develop their weapons six months earlier and to target Britain's south coast, Operation Overlord would have been near impossible, or not at all possible.[51]Winston Churchill, in Triumph and Tragedy also paid tribute to the sources of the British intelligence and reckoned that "Our intelligence had played a vital part. The size and performance and the intended scale of attack were known to us in excellent time [...] The launching sites and the storage caverns were found, enabling our fighters to delay the attack and mitigate its violence."[52]
^Conley, Katharine (2003). Robert Desnos, surrealism, and the marvelous in everyday life. Lincoln, NE.: University of Nebraska Press. p. 154. ISBN978-0-8032-1523-8.
^Distinguished Service Order citation for Michel Hollard. 1945. Hollard, at great personal risk, reconnoitered a number of heavily guarded V1 sites and reported on them with such clarity that models were constructed which enabled effective bombing to be carried out.