Battle: Los Angeles (also known as World Invasion: Battle Los Angeles) is a 2011 science fiction war film starring Aaron Eckhart as a Staff Sergeant who is part of a Marine task force assigned to rescue the remaining survivors left in the city of Los Angeles devastated from an alien invasion. The film was made with the cooperation with the Department of Defense and the United States Marine Corps, who supplied the production with authentic armor and aircraft. The events of the film are supposed to be tied into the Battle of Los Angeles, when in early 1942, the US military opened fire over the city at what was thought to be enemy aircraft, but later could not be identified. The film's cast included Michelle Rodriguez, Bridget Moynahan, and Michael Peña.
The following weapons were used in the film Battle: Los Angeles:
Staff Sergeant Michael Nantz (Aaron Eckhart) is notably seen firing a Beretta 92FS (used as the substitute for the Military M9) pistol at the alien soldiers during the final battle. In a continuity error, he is seen first firing the handgun and then in the next scene he is actually seen drawing the handgun. A marine is also seen drawing one out during the first encounter of the alien soldiers.
The M4 carbine is one of the main weapons utilized by the U.S. Armed Forces in the film. The M4 is seen in the hands of members of the 2nd Battalion 5th Marines including Staff Sergeant Michael Nantz (Aaron Eckhart) and Second Lieutenant William Martinez (Ramon Rodriguez). USAF Technical Sergeant Elena Santos (Michelle Rodriguez) is also seen with an M4. The Marines' M4A1 carbines are fitted with ACOG scopes, RIS foregrips, Surefire Universal weaponlights, and most interestingly, AN/PEQ-15 laser designators; an improved, compact version of the AN/PEQ-2 system first employed in the early 2000's. In several scenes, bayonets are seen fixed on the M4's (which appear to be OKC-3S bayonets, adopted by the Marines to replace the M9 bayonet). The M4s are also all equipped with what appear to be Magpul Back Up Sights (MBUS) though these are never actually used. While training on Camp Pendelton the M4's are seen with EOtech Holographic sights
The M16A4 rifle is carried by various Marines fitted with ACOG scopes (both TA31F and TA31RCO models), RIS foregrips, Surefire Universal weaponlights, Magpul MBUS rear sights, and AN/PEQ-15 IR designators. Soldiers of the 40th Infantry Division (CA ARNG) are also armed with M16A4's, but without the AN/PEQ-15s. Joe Rincon (Michael Peña) is seen using the M16A4 as well.
The M203 grenade launcher 40mm grenade launcher is seen used by U.S. Marines as well. The grenade launchers mounted on the M4A1 rifles appear to be shorter M203A1 models, while the ones seen on the M16A4's are the M203. Cpl. Lee Imlay (Will Rothhaar) is notably seen using his M203A1 to detonate an explosive during the final battle.
Several models of the M240 machine gun are seen used in the film. The "D" model of the M240 machine gun is visible on the ramp of the U.S.M.C. CH-46 Sea Knight carrying Nance's Marines as well as on the UH-1 Huey helicopter sent to retrieve the Marines at the police station. The M240B is seen mounted on Marine LAV's. Nantz is seen manning the M240B when the Marines commandeer an LAV. Also, the coaxial-mounted version M240C is utilized by the LAV-25 and an M1A1 Abrams tank.
The Browning M2HB heavy machine gun is seen mounted on various Marine Humvee's as well as in a machine gun nest at the Santa Monica Airport. Cpl. Jason Lockett (Cory Hardrict) is seen using a Humvee's M2 to fire at alien soldiers on an overpass.
When Nantz meets Lt. Martinez, several Marines can be seen mounting a Browning M3 at the side of a UH-1N Huey helicopter at MCAS Camp Pendleton (in a continuity error, they are seen mounting the machine gun twice).
One of the Marines is seen carrying the M136 AT4 after acquiring it from the wreckage of the FOB. Technical Sergeant Elena Santos (Michelle Rodriguez) uses it in the battle to destroy an alien drone. The sound editing crew seems to the treat the AT4 as a guided weapon, judging by the squealing lock-on tone heard before firing, despite the fact that Santos was actually aiming at the drone's flight path rather than the drone itself.
The Mk 19 grenade launcher is briefly seen mounted on a Marine Humvee when Nantz and his squad first take the streets in Santa Monica. Mk 19s can also be seen in the mini-turrets of USMC AAVP7A1 amphibious transports in news footage earlier in the movie.
