During World War II, Operation Savannah was the first insertion of SOE trained Free French paratroops into German-occupied France: on the night of 15 March, 1941.

This SOE mission, requested by the Air Ministry, was to ambush and kill as many pilots as possible of the Kampfgeschwader 100, a German Pathfinder formation stationed at Meucon airfield which spear-headed night raids on Britain.

Five paratroops made a blind drop at midnight from an RAF Whitley, landing some eight miles east of the town of Vannes (where the Pathfinder crew billeted), and five miles off target. The following day they discovered the pilots no longer commuted between Vannes and Meucon by bus, but had taken to travelling on an ad-hoc basis by cars. Hence the grand ambush and assassination had to be aborted.

Seeking to gain something from the mission, Captain Berge instructed his men to disperse and go on general reconnaissance and meet at Sables d'Olonne at the end of the month for extraction by sea.

One of the men was already missing and another failed to make the rendezvous. After several nights watching from the sand dunes, on 4/5 April, Berge saw Geoffrey Appleyard of the SOE's Small Scale Raiding Force paddling ashore after launching from the submarine HMS Tigris . Unfortunately, two other kayaks were damaged being launched so only Berge and Forman could be extracted. Joel Letac remained behind and made his way to a safehouse in Paris and continued as an SOE operative.

The Free French paratroops went on to later form the French SAS and Berge took part in some early raids in the near east, eventually rising to the rank of general.