From Archive.org, some original documents:
The Siege of Bastogne was written from interviews with nearly all the commanders and staff officers who participated in the defense of Bastogne. It is essentially the account of how a single strong defensive force was built from separate commands of armor, airborne infantry, and tank destroyers. The interviews were conducted at Bastogne from December 31st, 1944 to January 25th, 1945, and were conducted with individual officers and also with whole groups whenever possible, including reviewing problems of the defense with commanders at the original scenes of their actions, as well as acquiring additional information from official records. A few of the headings include the concentration, attack and withdrawal, doubts and decisions, low ebb and arrival of supply, and Christmas Eve among others highlighting the battle. Illustrations and maps are missing from this digital document
https://archive.org/details/TheSiegeOfBastognePt1Of4/page/n1?q=Siege+of+Bastogne
https://archive.org/details/TheSiegeOfBastognePt2Of4/page/n13
https://archive.org/details/TheSiegeOfBastognePt3Of4/page/n3
https://archive.org/details/TheSiegeOfBastognePt4Of4/page/n4
Thank you.
“...a single strong defensive force was built from separate commands of armor, airborne infantry, and tank destroyers.”
Sounds like what the Germans did repeatedly, forming shattered units into ad hoc kampfgruppes; establishing defensive perimeters, counter-attacking to stabilize a fluid situation...breaking out of, or into a pocket to rescue trapped formations.
Not taking anything away from the valor of the defenders of Bastogne, the Bulge was a triumph of defensive warfare and the relief of an encircled force.