On 5 August 1942, Barth along with Hoessler parachuted from a Soviet bomber into a location close to
Gomel in south-east
Belarus. The two men had identity documents, food stamps, money and
wireless telegraphy sets. Barth wore the uniform of sergeant in the artillery, while Hoessler wore the uniform of corporal. After landing, they made their way to Berlin via
Warsaw and
Poznań, travelling as two soldiers on leave. Initially the men were to camp in
Arvid Harnack's holiday apartment at
Bad Saarow but it was found to be unsuitable for radio transmission. The Schumachers introduced the couple to Harro Schulze-Boysen, who suggested a camping site close to the
Teupitzer See, but it was also unsuitable. Schulze-Boysen introduced Hoessler to Hans Coppi, Barth began transmitting intelligence on 6 September 1942, sending a total of five messages and receiving a reply. ==Arrest==