Continuity: When the "Flag-Raisers" begin stripping down to go swimming, they show a few of the soldiers already down to their boxers. They switch to a shot of Bradley and then back to the soldiers and all have their pants on.

Factual error: When the soldiers strip off and run into the sea in the final scene, Doc takes off a pair of white socks that would be more appropriate for a final at Wimbledon. Not only are they white rather than khaki, they are virtually spotlessly clean which would be impossible after a week of fighting on the black sands of Iwo Jima.

Revealing: There are several scenes (most notably when the group is ambushed at Mt. Suribachi) where the bayonets attached to the guns bend back and forth showing them to actually be rubber instead of metal.

Continuity: When the marines start marching inland, where the Japanese are not shooting, you see several clips of the row of soldiers walking inland, then a clip of their waiting comrades, and then a clip of the soldiers - still walking in the exact same place, without moving forward.

Continuity: When Ira exits the stadium after the flag show to vomit, the alleyway in which he vomits is at first dark. In the next few shots, it is lit up and then once again dark.

Continuity: The monument was dedicated in November 1954, but Rene Gagnon (and Ira Hayes for that matter) didn't look one day older during the ceremony than during the battle 10 years earlier.

Deliberate "mistake": During the scene on the train in lounge car, a picture on the wall prominently shows an ALCO PA locomotive. The movie was set in 1945, but this locomotive was first produced in 1947.

Audio problem: When Rene Gagnon is playing the guitar on the ship his hand movements do not match the guitar that is playing.

Factual error: A picture of the real John 'Doc' Bradley taken of him with President Truman shows him using crutches (remember he had the leg wound and the operation took place after the war bond tour), however, in the movie 'Doc' did not have crutches when he met the President.

Other: During the hill climb up terrain shaped like a valley with rocks on either side, a soldier is directly hit with a large explosive, probably from the big guns, and his severed head lands down on another soldier's back, who is crouching to help another man. When the head lands on his back, it is just an empty helmet, but when he looks at it on the ground, you see the partially alive, severed head lying next to it with much of the neck still attached.

Continuity: When Ira is leaving Chicago on the train, the train starts moving while he's standing and saying goodbye the last time. In the next clip he's shown right next to the train door, but that would have moved further away.