Testimony of Aron Lach, born in Bialystok, Poland, 1922, regarding his experiences in Bialystok and as a partisan Extermination of the Jews in the outlying area of Bialystok, 02 November 1942; extensive participation by Hashomer Hatzair members in the uprising movement in Bialystok; names of members of the movement including their assignments; "Aktion" in Bialystok; reinforcement of the transfers of fighters to the forests and the partisans; establishment of a Jewish fighting organization by members of the parties; names of the members of the organization including Mordechai Tenenbam and Haike Grosman, the leaders; organizing groups including the witness to go out to the forests in Suprasl starting February 1943; fighting as partisans; making contact with a group of Soviet partisans who had been POWs and were released by Jewish partisans; search for Jews who had escaped from the ghetto during the liquidation and from trains in order to have them join the partisan units; death in battle of a Jewish partisan group led by Sasza when they are informed on, November 1943; landing of five parachutists, early 1944; transfer of two radio stations (?) to the partisans by the parachutists in order to make radio contact with the Soviet Union; help from three Germans (Reichsdeutsche) including Schaner in providing weapons and money to the partisans; Schaner joins the partisans with his personal weapon approximately two weeks before the liberation; capture of 20 Vlasov followers and their trial by the partisans, July 1944; activities of Jewish partisans in the Suprasl area including the shelling of eight trains near Starosielce and Horodok, laying mines on a main road in Krynki causing the demolition of three trucks carrying German soldiers, and sabotage of German telephone lines; liberation in Belorussia; enlistment in the Red Army.