first few days of fighting, 150 prisoners were taken who joined the Free French a few weeks later – "curiously enough, no one tried to convince them. They argued it out among themselves and joined up voluntarily." On 8 November 1940, the sloop discovered the Vichy submarine shadowing the Anglo-French task force and gave chase. The sloop was too slow to intercept the submarine, so Admiral Cunningham ordered his flagship, , to launch its Supermarine Walrus biplane. The aircraft straddled the submarine with two salvos of depth charges as it attempted to dive, damaging it. It was then scuttled off Port-Gentil, with the captain resolving to sink with his vessel. Koenig's forces landed at Pointe La Mondah on the night of 8 November. His forces included French Legionnaires (including the 13th Foreign Legion Demi-Brigade), Senegalese and Cameroonian troops. On 9 November, Free French Westland Lysander aircraft operating out of Douala bombed Libreville aerodrome. The aerodrome was eventually captured, despite stiff resistance met by Koenig's force in its approach. Free French naval forces consisting of the minesweeper and the cargo vessel were led by Georges Thierry d'Argenlieu aboard the in conducting coastal operations. De Brazza attacked and sank her sister ship, the Vichy French Bougainville. Libreville was captured on 10 November. On 12 November, the final Vichy forces at Port Gentil surrendered without a fight. Governor Georges Masson – despairing of his actions – committed suicide. Aftermath The Free French lost four aircraft and six aircrew in the campaign. There is disagreement about the total number of human losses. De Gaulle said "some twenty" died in the campaign. Jean-Christophe Notin claimed 33 were killed. Eliane Ebako wrote that "dozens" lost their lives, while Jean-Pierre Azéma said "roughly one hundred" were killed. Another account states that 35 Vichy troops were killed to 8 Free French. On 15 November, de Gaulle made a personal appeal that failed to persuade most of the captured Vichy soldiers—including General —to join the Free French. As a result, they were interned as prisoners of war in Brazzaville, French Congo for the duration of the war. With their control consolidated in Equatorial Africa, the Free French began focusing on the campaign in Italian Libya. De Gaulle relieved General Leclerc of his post in Cameroon and sent him to Fort Lamy, Chad to oversee offensive preparations. The conflict in Gabon triggered a mass migration of Gabonese to Spanish Guinea.