Red Army soldier with a service dog near the destroyed Queen Elizabeth Bridge (Erzsébet híd) in Budapest, Hungary; January, 1945. 

One of the ruined bridges

A Soviet 52-k gun and crew engaged in battle on a street of Budapest, Hungary; January 1945.  
The 85 mm gun M1939 (52-K) was a Soviet anti-aircraft gun. In emergencies, as here, they were utilized as powerful anti-tank weapons. 

Combat street scene

Soviet gunners firing from a 122-mm M-30 howitzer at enemy positions on a street of the Hungarian capital, Budapest; January, 1945. 