Yes, "Jarhead" is based on a true story. The film, directed by Sam Mendes and released in 2005, is adapted from Anthony Swofford's memoir of the same name. It follows Swofford's experiences as a Marine sniper during the Gulf War. The movie explores themes of war, boredom, and the psychological impact of military service, providing a gritty portrayal of the life of soldiers in combat and the challenges they face both on the battlefield and afterward.

"Jarhead," directed by Sam Mendes and released in 2005, is generally well-received for its raw and realistic portrayal of a Marine's experience during the Gulf War. Based on Anthony Swofford's memoir, the film explores themes of boredom, psychological strain, and the complexities of military life rather than traditional combat action. Critics praised its cinematography and performances, particularly by Jake Gyllenhaal. While some viewers may find its pacing slow, many appreciate its introspective approach to war. Overall, it’s considered a thought-provoking war film.

"Jarhead," directed by Sam Mendes, explores the experiences of U.S. Marines during the Gulf War, focusing on the emotional and psychological challenges they face rather than traditional combat action. The film, based on Anthony Swofford's memoir, highlights themes of disillusionment, the absurdity of war, and the struggle for identity amidst the chaos. It portrays the boredom and waiting that often accompany military service, contrasting with the expectations of heroism and glory, ultimately questioning the purpose and impact of warfare on soldiers' lives.

"Jarhead" was released on November 4, 2005. Jake Gyllenhaal was born on December 19, 1980. Therefore, during the film's release, he was 24 years old. However, he would have been 23 during the majority of the filming, which took place in 2004.