TL;DR : Unreasonable objectives, lots of tactical and strategic mistakes and much fiercer than anticipated resistance equals enough damage to turn even an elite and prestigious unit into a dead man (or rather a dead division) walking without fully realizing it.

No archived link, image too small zoomed out, too big zoomed in, requiring left/right scrolling, absolute pain to read with PC, probably taken from a high res (over 1080p) phone.