Continuity mistake: The Pacific Complete Series, Episode 6: A soldier kneels down next to a covered dead soldier's body to check his bottle of water. When uncovering the body, the face of the dead soldier faces to the right. In the next shot, the face is to the left, and then before being covered again the face goes back to its original position of facing to the right. 10m:30s to 11m:10s.
Continuity mistake: In Episode 4, after a Japanese counter attack, Leckie is talking to two other soldiers. In the first shot you see him walk to where the .30 cal machine gun position is located. The machine gun is uncovered, then after the camera switches to the dead Japanese and back to machine gun, it's covered by a water proof tarp. Then it shows Leckie again as he's lighting a cigarette with just the tip of the .30 cal machine gun muzzle uncovered.
Factual error: John Basilone was actually a Sergeant when he won the Medal of Honor at Guadalcanal, but is shown wearing the insignia of the higher rank of Platoon Sergeant. However, when his medal citation is read out it does give his correct rank (although senior sergeants in the US forces are commonly addressed simply as "sergeant", official citations give their full rank).