Taxi Driver: Vietnam

Although it is not really brought up much in the film, Travis Bickle's experience in the Vietnam war is an essential part of his characteristics and influences a lot of his actions. Travis mentions his military service when he is trying to get a job at the taxi company. It is really never talked about later on. It isn't necessarily confirmed, but Travis' inability to have normal social interactions and his profusely violent behavior can most likely be contributed to a case of PTSD. Also, Travis' knowledge of violence and proficiency with weapons were all learned when he was in the war. Even though Travis does have a lot of anger built up inside him, he would have never been able to do as much physical damage to people if he did not have any of the knowledge he obtained from Nam.