A miniseries about Easy Company, Fifth Battalion, 506th Infantry Regiment, 101st Airborne Division 'Screaming Eagles'. The name 'Band of brothers' came from a quote from a Shakespeare play, Henry V.
Google Saint Crispen's Day Speech for more information.
Quote from St. Crispen's Day Speech:
From this day to the ending of the world,
But we in it shall be remembered-
We few, we happy few, we band of brothers;
For he to-day that sheds his blood with me
Shall be my brother