Otto, tsk tsk tsk.
Operation, Battle, campaign, - all a sequence of things. Operations become battles, battles being a part of a campaign and so on.
The particular operation to knock Germany out with a massive bombardment on their capital has been named "the battle of Berlin". BC failed there and lost.
But be wary, - many (German) historians and LW veterans do not even to this day recognize the BoB as a "battle"
Anyway, Berlin kept on being bombed untill it was mostly rubble, - I wonder if the Berliners consider the Battle of Berlin to have been won by the LW, - as they kept being on the receiving end untill the war ended.
Germans indeed won the french campaign, BTW