It's D-Day, and Easy Company's jump into Normandy is a giant mess. Planes crash, pilots speed up while flying too low, and the soldiers land often in the completely wrong place. However, they're so well trained - they studied the sand tables! - that they manage to get to where they're supposed to be (many of them, anyway) and manage to pull off a textbook assault on a fixed position against some German guns keeping the guys out in the water from reaching the beaches.
It's all really exciting.
Undeclared Band of Brothers - Day of Days | Undeclared! Band of Brothers podcast - Listen or read transcript on Metacast