Career
In 1940, at the beginning of the war, he was a "capitaine au long cours" and "lieutenant de vaisseau de réserve". After some reconnaissance missions at Le Havre, he relocated to Cherbourg, where he took command of the Marie-Gilberte and sailed from Casablanca in Morocco. In 1941, he was demobilised and relocated to the city.
He immediately involved himself in the resistance, dealing with the general resupply of Morbihan.
Chenailler took the name Colonel Morice after the arrest by the Germans of the commander Maurice Guillaudot, whose responsibilities he then assumed. He became commander of an army which would number as many as 12,000 fighters.
Throughout the winter of 1943-1944 Chenailler took delivery of numerous arms drops. From 6 June 1944, at the time of the Normandy landings the arms drops increased at Saint-Marcel, near Malestroit, and soldiers from the 4eme bataillon d’Infanterie de l’Air (2eme Royal College of Physicians / 4eme SAS) were also parachuted in.
On 18 June, the maquis de Saint-Marcel was attacked by the Germans, but the parachutists of the SAS and the maquis fighters succeeded in containing the attack and retaliating after nightfall.
In August, after linking up with the Allied forces, Chenailler was at the front line at Lorient and at la Vilaine with general Borgnis-Desborde. At the end of the war, Chenailler was promoted to the rank of Frigate captain, while still remaining lieutenant-colonel of the Armée de terre. Officier de la Légion d"honneur
Croix de la Libération
Croix de guerre 1939-1945
Médaille de la Résistance
Médaille commémorative 1939-1945
Médaille commémorative des services volontaires dans la France libre
Bronze Star
Order of the British Empire
Étoile Noire du Bénin.