Cast
Aaron Eckhart as USMC SSgt. Michael Nantz, 2/5
Ramon Rodriguez as USMC 2ndLt. William Martinez, 1st Platoon's acting commander
Will Rothhaar as USMC Cpl. Lee "Cowboy" Imlay
Cory Hardrict as USMC Cpl. Jason "Cocheez" Lockett, younger brother of Cpl. Dwayne G. Lockett whom was killed in SSgt. Nantz' previous tour.
Jim Parrack as USMC LCpl. Peter J. "Irish" Kerns
Gino Anthony Pesi as USMC Cpl. Nick C. "Stavs" Stavrou
Ne-Yo as USMC Cpl. Kevin J. "Specks" Harris, Cpl. Stavrou's friend
James Hiroyuki Liao as USMC LCpl. Steven "Motorolla" Mottola (nickname spelled "Mottorola" in DVD subtitles).
Bridget Moynahan as Michele, a veterinarian
Noel Fisher as USMC PFC Shaun "Casper" Lenihan, Cpl. Imlay's friend
Adetokumboh M'Cormack as USN HM Jibril A. "Doc" Adukwu
Bryce Cass as Hector Rincon
Michael Peña as Joe Rincon, Hector's father
Michelle Rodriguez as USAF TSgt. Elena Santos, 61 ABW
Neil Brown, Jr. as USMC LCpl. Richard "Motown" Guerrero
Taylor Handley as USMC LCpl. Corey T. "Point Break" Simmons
Joey King as Kirsten, Michele's niece
Jadin Gould as Amy
Jessica Heap as Jessy
Lucas Till as USMC Cpl. Scott L. Grayston
Kenneth Brown, Jr. as ARNG CPL Richard Oswald, 40th ID
Jadin Gould as Amy, Kirsten's sister
Joe Chrest as USMC 1stSgt. John Roy, SSgt. Nantz' superior and friend
E. Roger Mitchell as USMC Capt. D. Heffler
Rus Blackwell as USMC LtCol. J.N. Ritchey (credited as LtCol. K.N. Ritchie)
Susie Abromeit as Amanda
Brandi Coleman as Cherise, Cpl. Harris' fiancée
Elizabeth L. Keener as Kathy Martinez, 2ndLt. Martinez' pregnant wife
David Jensen as Dr. L. Boyd, M.D., LCpl. Kerns' psychiatrist
Lena Clark as Chris
Nzinga Blake as HM Adukwu's sister
Taryn Southern as Kate, the beach reporter
Jim Dever as USMC SgtMaj. Dever