Complex sentence: In the official Soviet version, the battle was similar to that of the battle for the Reichstag, there was an assault over Wilhelmplatz and into the building with a howitzer to blast open the front doors and several battles within the building.
Split into simpler sentences: In the official Soviet version, the battle was similar to that of the battle for the Reichstag. There was an assault over Wilhelmplatz and into the building with a howitzer to blast open the front doors and several battles within the building.