Band Of Brothers Internet Archive ((free)) -

While the Blu-ray sets include excellent "making-of" features, the Internet Archive often hosts ephemeral media that didn't make it to modern streaming:

The "Band of Brothers" Internet Archive is a treasure trove for history enthusiasts and fans of the acclaimed HBO miniseries. The archive is a digital repository of historical documents, photographs, and videos related to the 101st Airborne Division's experiences during World War II, specifically the Easy Company, 2nd Battalion, 506th Parachute Infantry Regiment. band of brothers internet archive

Searching for "Band of Brothers" on the Internet Archive yields a treasure trove of content that goes beyond the ten episodes. 1. The Documentary Shorts specifically the Easy Company