"Band of Brothers" follows Easy Company through the entirety of their campaign in the European theater. After enduring the brutal training of Captain Sobel, who is eventually removed from command due to his incompetence in the field, the company is led into combat by Lieutenant Thomas Meehan, who is killed when his plane is shot down on D-Day. This forces Lieutenant Dick Winters into command. Winters distinguishes himself at Brécourt Manor and is subsequently promoted, eventually becoming the Battalion Commander. His close friend, the cynical, hard-drinking Captain Lewis Nixon, serves as his intelligence officer throughout the war.
The series chronicles the fates of numerous soldiers. Several key members are killed in action, including Warren "Skip" Muck and Alex Penkala, who die from a direct artillery hit in Bastogne. Others, like Bill Guarnere and Joe Toye, suffer grievous injuries, each losing a leg in the same shelling incident. Lieutenant "Buck" Compton suffers a psychological breakdown after witnessing their injuries and is evacuated. Private Albert Blithe is shot in the neck after the Battle of Carentan but survives the war, contrary to the series' endnote.
A major turning point occurs during the assault on Foy, where the company is pinned down by the inept leadership of Lieutenant Norman Dike. In a moment of crisis, Captain Ronald Speirs relieves Dike, charges through enemy fire, and leads the company to victory, cementing his legendary status. Near the war's end, the company discovers a Nazi concentration camp, a horrifying experience that profoundly impacts all of them and provides a grim justification for their fight. In the final days, they capture Hitler's fortified mountain retreat, the Eagle's Nest. The series finale sees the men grappling with the end of the war and the point system for returning home. Winters remains in Europe to help process the German surrender. The series concludes with the veterans, in their own words, reflecting on their service, their fallen comrades, and the unbreakable bond that made them a 'company of heroes.' Nixon, after several failed marriages, finds happiness late in life, and Winters fulfills his promise to himself, buying a farm and living a quiet life in peace.