What are the 3 major battles fought in Beowulf?

Beowulf’s fight against
Grendel: Beowulf heard of the marauding monster Grendel,
who was terrorizing the Danes. He decided to visit the region to fight Grendel and save
the Danes. King Hrothgar of the Danes welcomed Beowulf and offered him information about
Grendel. Finally, Beowulf faced off against Grendel and emerged victorious by mortally
wounding the monster.

Beowulf had to face
Grendel’s mother who sought to avenge the son’s death.
Grendel’s mother went to Herot and made away with one of King Hrothgar’s most trusted
warrior. The King sought Beowulf’s help to destroy Grendel’s mother. The warrior pursued
Grendel’s mother to her abode and battled the
monster.

Then
the lord of the war-like Geats who did not shrink from combat seized Grendel's mother by
the shoulder; that fierce one filled with rage then flung his deadly foe, and she fell
to the ground.

In the battle
against Grendel’s mother, Beowulf emerged victorious by killing the
monster.

Beowulf ascended the throne after the demise of
Hygelac, former king of the Geats. He ruled for fifty years until he was forced to face
a dragon. The dragon was agitated and wrecked havoc on
everyone because a golden goblet was stolen from its
den.

I would
carry neither weapon, nor sword against the serpent, if I knew how I could make good my
boast with such an enemy, as I did in the day of
Grendel.

Beowulf killed the
dragon, however, he also succumbed to wounds caused by the
battle.

He
struck the loathsome monster a little lower; his bright and burnished sword penetrated;
the beast's blaze began to dwindle.

Beowulf spoke; he knew
full well that his portion of earthly bliss was done and gone, that the tale of his days
had fled, and that death was near.