During the united allied military parade in Berlin on 7th September 1945, allies countries were shocked by a column of
52 IS-3 heavy tank fielded by the soviet 71st Guards Heavy Tank Regiment.  The tank features a "pike's nose" design
on the glacis. It has a heavily amoured welded hull and a unusually rounded turrent which deflected amour-piercing shell
 more effectively than earlier slab-sided designs. The turrent houses a powerful semi automatic 122mm D-25T gun
with a muzzle brake. The IS-3 carried four internal fuel tank in addition to four cylindrical external fuel tanks which
were connected to the internal fuel tank.

At least one tank regiment of IS-3 was sent for battles in eastern front. However, it's still unverified if the tanks were
involve in  any actual combat in the Berlin campaign. Some source claim that it was first deployed in combat against
the japanese in Manchuria in August 1945. A total of 2311 IS-3 were produced until mid 1946. The IS-3 suffered
from many design flaws such as unreliable engine and gearbox.  At the end of 1950's, the tank was modernised and
received a new designation of IS-3M. The tank were exported to Poland, Czechoslovakia, China and Egypt. Captured
IS-3 were also used by the Israeli army who refitted the original tank engine with engine from T-54.