ONS 20 and ON 206 were North Atlantic convoys of the ONS/ON series which ran during the battle of the Atlantic in World War II.They were the subject of a major U-boat attack in October 1943, the third battle in the Kriegsmarine's autumn offensive.
ONS 20 and ON 206 were North Atlantic convoys of the ONS/ON series which ran during the battle of the Atlantic in World War II.They were the subject of a major U-boat attack in October 1943, the third battle in the Kriegsmarine's autumn offensive. (en)