The film follows the 2nd Platoon of Battle Company on a 15-month deployment in the Korengal Valley of northeast Afghanistan in the Nuristan area. The Korengal flows north to the Pech, which then flows east to the Kunar River valley on the border with Pakistan. The film chronicles the lives of the men from their deployment to the time of their return home. The Korengal Valley was at the time regarded as "the deadliest place on Earth" (as stated in the documentary itself, trailers, and television commercials on the National Geographic Channel). The goal of the deployment was to clear the Korengal Valley of insurgency and gain the trust of the local populace.
In late October 1943, a battalion of US Marines have landed on Choiseul Island to create a diversion for the impending Allied invasion of Japanese held Bougainville Island.
U.S. Navy Ensign Frank Pulver (Robert Walker, Jr.) feels unappreciated, as usual. Even when he personally aims a sharp object into the hindquarters of the hated Captain Morton (Burl Ives), the happy crew cannot imagine that the all-talk, no-action Pulver could be behind it. A poll to guess at the identity of the "ass-sassin" results in votes for almost everyone except Pulver, which he bitterly resents.
After each is accepted for admission to Navy, three midshipmen, Dick Gates, Roger Ash and "Truck" Cross, become roommates. Dick is the scion of a wealthy family, Roger a former star football player for another university, and Truck a sailor appointed from the fleet. With a common love of football, all three go out for the plebe squad. Dick is tricked into committing a rules violation by a disreputable upperclassman with a penchant for hazing and is severely paddled. Even though hazing is forbidden by regulations, Roger decides to get even on his own terms. Despite his egotism, his classmates as well as the upperclassmen respect him when he challenges the abuser to a boxing match and wins it.
Much of the plot depicts the testing of downward firing ejection seats from B-47 Stratojet bombers that were conducted at Eglin AFB, Florida, initially between 7 October and 21 October 1953, when nine tests were conducted of the seat from a B-47 over Eglin's water ranges over the Gulf of Mexico, by the Air Proving Ground, at an altitude of 10,000 feet and various speeds. A second series of tests was also conducted beginning 8 July 1954 after refinements to the system. These tests were recreated in the film, shot at Eglin in 1955, with a different Stratojet from the one in the actual missions.
In 1943, Capt. Harold "Cal" Calvert (Wendell Corey) is sent on a course at Smoky Hill, Kansas, to learn to fly a new bomber, the Boeing B-29 Superfortress. His instructor is his cousin, Major Tom West (Forrest Tucker), an officer who the other pilots think has shirked his duties by claiming engine trouble on the raid over the Ploesti oil fields. Cal stands up for Tom when a crewman taunts his cousin in front of Helen (Vera Ralston), a nurse that Tom has been seeing.
In 1961, with war looming in Berlin, an Air National Guard unit of actors, journalists and studio personnel should pass an inspection to save themselves from transferred to war front.
Major Thomas Egan is a U.S. Air Force fighter pilot who transitions to UCAV duty when demand drops for manned aircraft. As a drone pilot, with a limited ability to control collateral damage during airstrikes, Egan becomes disillusioned. He begins to more deeply question the morality of his job after his unit begins running missions for the CIA.
The film is inspired by the Haditha killings incident that occurred three months after the Battle of Haditha in the Iraq War. On 19 November 2005, 24 unarmed Iraqi men, women and children were killed following an incident where an I.E.D killed one marine and seriously wounded two others and were killed by a group of United States Marines in Haditha, a city in the western Iraq province of Al Anbar. Since the release of the film, however, the US military justice controversially dropped all charges to all Marines involved. The names of the involved parties have been changed in the film.
Macy stars as the COB (chief of the boat) on a fictitious US Navy submarine, the USS Swordfish (although there were two actual submarines named USS Swordfish that served the US Navy during and after World War II, neither are represented by the sub in this film). While on patrol in the North Atlantic, the ship is ambushed by two German U-boats. Swordfish destroys one of them, but is critically damaged by a torpedo fired from the second one, the fictitious U-boat U-429 (again, there was a real WWII German submarine U-429, not actually represented in the film). Eight members of the American crew escape and are held prisoner on board U-429. However, the American executive officer had previously contracted meningitis and given it to his captain, who brought it aboard the U-429. Within days, over half the German crew, as well as some of the Americans, contract the disease and die. Although the Germans and Americans begin to work together to keep the boat operational, not all the U-boat crew is willing to go along with this arrangement. Also, another U-boat and an American destroyer (the fictional USS Logan, not related to the actual attack transport of that name) threaten to overwhelm their tentative truce.
Pilot Officer Peter Penrose (John Mills) is posted in the summer of 1940 as a pilot to (the fictional) No. 720 Squadron, at a new airfield, RAF Station Halfpenny Field, as a very green "15-hour sprog" Bristol Blenheim pilot and is assigned to B Flight, under Flight Lieutenant David Archdale (Michael Redgrave).
Army private first class Amy Cole (Kristen Stewart) is placed as a guard at Guantanamo Bay detention camp, specifically Camp Delta. As a new guard at the prison she is first cold towards the detainees despite the fact of her showing dislike to certain actions towards the detainees. Eight months pass and she even writes a report to explain an irregularity on a shower shift that lead to a detainee (Peyman Moaadi) feeling uncomfortable. By the end of the film she stops him from committing suicide. At this point it is clear that her convictions towards the detainee are much different as she seems in distress and really affected by the possibility of him ending dead. The film ends by her leaving Guantanamao and leaving him a Harry Potter book he had been asking for years.
Danfung Dennis filme le quotidien d'un régiment de l'armée américaine en Afghanistan, et plus particulièrement celui du Marine Harris jusqu'à son retour, blessé physiquement et mentalement, en Caroline du Nord.