In the five short months of the ghetto’s existence, the youth of Łachwa formed an underground movement led by Isaac Rochczyn and aided by Dov Lopatyn, head of the ghetto’s Judenrat. Together, they established contact with partisan groups in the area in order to secure funding and weapons, although these groups were largely anti-Semitic and did not fully support the movement.
Lopatyn and Rochczyn decided to resist. Lopatyn set the Judenrat headquarters on fire to signal this decision. The youth resistance engaged the Germans and local collaborators with axes, sticks, Molotov cocktails, and even their bare hands, while others attempted to flee. Rochczyn killed a Gestapo officer with an ax and jumped into the river but was shot and killed. Kopel Kolpanitzky, who later wrote a book about surviving the Łachwa ghetto, recalls the chaos of his escape: