Day of Days - S1-E2
Revealing mistake: When we see the German getting shot in the trench at the 88 station, a blood squib pack can be seen on his right-hand chest pocket before it goes off. (00:31:20)
Day of Days - S1-E2
Revealing mistake: During the battle to take out the 88s, the camera pans to Lt. Winters reloading his M1 Garand. If you look closely, you can see he is loading blanks into his weapon. (00:31:29)
Answer: He bit off a piece of a cigar.