It's not somethings are best left unsaid, rather some people are not very articulate or good communicators, and military service has its own language-as do we. If I said I just found a nice 5 screw M&P, many here would go ooh and ah !, outsiders would go Huh ?
The Bulge was very dramatic, had its moments of heroism, Bastogne, e.g., it's atrocities-the Malmedy Massacre, the Wereth 11, events such as Patton pulling 3 divisions out of line and sending them north, all the rear echelon types who suddenly found themselves on the front lines. I read an account by one officer who gave an M-1 rifle to an artilleryman who now had to function as a rifleman-the GI said he'd never seen one before. He joined the Army in 1941, they really didn't have Basic back then, you were assigned to a unit and got you basic there. His unit still had the M1903.
Intelligence failures ? The Germans learned from us-strict radio silence, they set up a phantom 25th Army, 1st Paratroop Army, let them generate radio traffic.