The battle in Berlin was an end phase of the Battle of Berlin. While the Battle of Berlin encompassed the attack by three Soviet fronts (army groups) to capture not only Berlin but the territory of Germany east of the River Elbe still under German control, the battle in Berlin details the fighting and German capitulation that took place within the city.
The outcome of the battle to capture the capital of Nazi Germany was decided during the initial phases of the Battle of Berlin that took place outside the city. As the Soviets invested Berlin and the German forces placed to stop them were destroyed or forced back, the city's fate was sealed.