premise: Jarhead starred Harrison Ford as U.S. Marine Anthony Swofford.
hypothesis: Anthony Swofford ( born August 12 , 1970 ) is an American writer and former U.S. Marine , best known for his 2003 book Jarhead , based heavily on his accounts of various situations encountered in the Persian Gulf War . Jarhead is a 2005 American biographical war drama film based on U.S. Marine Anthony Swofford 's 2003 memoir of the same name , directed by Sam Mendes , starring Jake Gyllenhaal as Swofford with Jamie Foxx , Peter Sarsgaard and Chris Cooper .