Leon Ford
1st Lt. Edward 'Hillbilly' Jones (11 eps)
James Badge Dale
Robert Leckie (10 eps)
Jon Seda
John Basilone (10 eps)
Joseph Mazzello
Eugene Sledge (10 eps)
Ashton Holmes
PFC Sidney Phillips (10 eps)
Jacob Pitts
PFC Bill 'Hoosier' Smith (10 eps)
Rami Malek
PFC Merriell 'Snafu' Shelton (10 eps)
William Sadler
Lt Col. Lewis 'Chesty' Puller (10 eps)
Jon Bernthal
Sgt. Manuel 'Manny' Rodriguez (10 eps)
Matt Craven
Dr. Grant (10 eps)
Caroline Dhavernas
Vera Keller (10 eps)
Brendan Fletcher
Bill Leyden (10 eps)
Isabel Lucas
Gwen (10 eps)
Annie Parisse
Lena Mae Riggi-Basilone (10 eps)
Claire van der Boom
Stella (10 eps)
Keith Nobbs
PFC Wilbur 'Runner' Conley (10 eps)
Tom Hanks
Narrator (voice) (10 eps)
Nicholas Cooper
Army Officer (10 eps)
Scott Gibson
Capt. Andrew 'Ack Ack' Haldane (10 eps)
Martin McCann
Cpl. R.V. Burgin, Sgt. R.V. Burgin (10 eps)
Nathin Art Butler
Private Young (10 eps)
Toby Leonard Moore
2nd Lt. Stone, Sgt. Stone (10 eps)
Joshua Bitton
Sgt. J.P. Morgan (4 eps)
Chris Milligan
Marine (2 eps)
Anna Torv
Virginia Grey (1 eps)
Kate Bell
Mary Houston Phillips (1 eps)
Cariba Heine
Phyllis (1 eps)
Betty Buckley
Marion Leckie (1 eps)