At the outbreak of the war, Selys Longchamps was drafted into the
Belgian Army, in which he was commissioned as a cavalry officer with the
1er Régiment des Guides. He managed to escape with the
British forces from
Dunkirk, only to return to France shortly after and be faced with France's capitulation. He tried to join the allies again by way of
Morocco, where he was arrested by the
Vichy French authorities and sent into internment in
Marseille. He escaped and travelling via
Francoist Spain, was able to reach Britain, where he – after purporting to be younger than his age of 28 – was accepted for flight training with the RAF. He was posted to
No. 609 Squadron RAF, and flying
Hawker Typhoons quickly made a name as an able and aggressive pilot. == Attack on the Gestapo headquarters in Brussels ==