My great-grandfather Grachev Nikolay (1911-1970) was mobilised to the soviet army on June 29 1941.
7 September, 1941 - was captured in the district of Chernigov.
Until October, 1942 was in a POW camp in Krasny Bereg, Gomel region, Belorussia.
January 11, 1943 - August 25, 1944 - working in a coal mine at Liege (or Luttich) in Belgium.
August 25, 1944 evacuated to Germany into Ahlen camp. From there he escaped along with another POW on March 5, 1945.
Belgians found them in a forest and hide untill the end of war. The names of the citizens of Belgium, unfortunately, are unknown.
11/12 June 1945 transferred to Soviet troops.
Aug. 29, 1946 - demobilized and sent home.
I have sent a request to the Red-cross (UPD: negative result), and to Liege and Ahlen archives.
I would appreciate any useful links of sourses where i could get more details of my grandfather's story in Belgium coal mine and Ahlen camp.