The First Wizarding War was fought from 1970 to 1981. It included Lord Voldemort’s power begining, the rise of the Death Eaters, and the huge amount of chaos that resulted in his reign of terror.
The Battle of Hogwarts was a conflict that ended the Second Wizarding War when Harry Potter killed Voldemort. It took place in the early hours of 2 May, 1998. It was inside the Hogwarts School of Witchcraft and Wizardry.