Aharon Bruskin was one of the commanders in the Jewish Fighting Organization. On May 7, 1943, he was among the fighters who left the bunker at Mila 18 through the sewage system to summon the aid of members of the Jewish Fighting Organization in the Aryan section of Warsaw. As they came out of the sewage pipe they were ambushed by the Germans and most of them, including Bruskin, were killed in the ensuing fight. He was 25 years old when he died.
Source: Dor, Danny, Ed. Brave and Desperate. Israel: Ghetto Fighters' House Museum, 2003.