Character mistake: When Moss is arguing with the border guard at the Eagle Pass international bridge, he claims that he is a veteran of the "12th Infantry Battalion." There has never been such a thing as the 12th Infantry Battalion in either the Army or the Marines. Rather, they are based on a structure of 3-4 battalions per numbered regiment (i.e., 1st Battalion, 3rd Infantry Regiment/2nd Battalion, 5th Marine Regiment, etc). The film takes this seriously, as the guard, a veteran himself, buys Moss' story.

No Country For Old Men (2007)
Ending / spoiler
Directed by: Joel Coen, Ethan Coen
Starring: Woody Harrelson, Tommy Lee Jones, Josh Brolin, Javier Bardem
Anton Chigurh (Bardem) kills Carson Wells (Harrelson) and the man who hired him (Root) for the inconvience of having them tracking him down. Llewelyn Moss (Brolin) realising that Chigurh is closing in, tries to meet with his wife Carla Jean (Macdonald) at a motel in El Paso, but he ends up getting shot and killed by the gang of Mexicans that were following Carla Jean and her mother (supposedly he had been drinking with a neighbouring tenant before the Mexicans arrived). Sheriff Ed Tom Bell (Jones) arrives seconds after the shootout and is so shocked by his failure to protect Moss that he decides to retire. In a largely ambiguous scene, Bell returns to the crime scene late at night and finds the keyhole to Moss' room missing. Chigurh is seen hiding behind the door looking at a reflection in the hole. Bell works up the courage to go inside and finds no-one inside. Whether or not, Chigurh was in the same room at the time is open to debate. While inside he finds an air vent that has been opened with a coin, which meant Chigurh was most definitely in the room at some point and had taken the money that Moss hid. Bell meets with his uncle Ellis (Corbin), who tells him about vanity and how it applies to his job and the increasing danger that it entails (Bell relates it to Chigurh). Chigurh tracks down Carla Jean and flips a coin for her. She refuses to call it, and it is implied that he kills her (as he leaves, he looks at his shoes for blood). While driving away, Chigurh's car is struck by another motorist, and he leaves the accident with a broken arm. A teenage boy passing by helps him by giving his shirt to use as a sling, and in return Chigurh gives him some money. Chigurh walks away. The final scene shows Bell having a discussion with his wife Loretta, about two dreams he had about his father. Both dreams connect and signify his large responsibility for his failures and fear of his final judgement.
jezzy t
Suggested correction: He might have meant 12th Infantry Regiment. From Wikipedia: "Three 12th Infantry battalions deployed to South Vietnam with the 4th Division from August through October 1966."
If he said "battalion" but meant "regiment", then it's still a valid mistake for saying it wrong and being believed.
Regiments have not existed as functional units in the US Army since shortly after Korea; they are simply historic names associated with various battalions. Marine battalions are not numbered higher than 4 in any regiment, and in any case do not carry an explicit designation of "infantry."
Llewelyn Moss: I'm going out.
Carla Jean Moss: Going where?
Llewelyn Moss: There's something I forgot to do, but I'll be back.
Carla Jean Moss: And what are you going to do?
Llewelyn Moss: I'm fixin' to do something dumber than hell, but I'm going anyways.
Trivia: The scene in which Chigurh strangles the deputy was achieved with a metal chestplate on the deputy. It covered him from the middle of his chest to the jaw. Several different ones were made, each with the handcuffs in deeper.
Question: The movie does not have a soundtrack at all, yet during the end credits, music is heard. What is the name of that music?
Answer: "Blood Trail (end titles)" By Carter Burwell, the Coen's frequent composer. The Film does not have a soundtrack, but you can listen to it in Carter Burwell's website: http://www.carterburwell.com/projects/NCFOM.html.
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