 After their water ran out , the Beck / <unk> group developed a routine whereby some of the group worked to dig a well , while others watched out for approaching Germans , and yet others ventured outside the bunker to scavenge for useful items . The group eventually dug their way to two water canals and built a well . On November 17 , during an excursion outside the bunker , the group made contact with a small partisan unit , also in hiding , led by a Russian soldier POW who had been liberated during the uprising . Subsequently , several of the group would join the partisans for small scale attacks on German troops . The group survived until the entry of the Red Army in mid @-@ January . 
