that sounds like a Very Good read
It is. I've just got to the part where the resistance fighters have fought alongside the Red Army to free the city of Vilnius from the Germans. At this point, the head of the Vilna Jewish ghetto resistance group, Abba Kovner is sending some of the group's members as couriers to nearby cities like Kovnov and Grodno to find, and get info from other Jewish refugees they meet, and report back.