A veteran (from Latin vetus, meaning "old") is a person who has had long service or experience in a particular occupation or field; " A veteran of ..." . This page refers to military veterans, i.e., a person who has served or is serving in the armed forces, and has direct exposure to acts of military conflict, commonly known as war veterans (although not all military conflicts, or areas in which armed combat takes place, are necessarily referred to as "wars").

Military veterans often receive special treatment in their respective countries due to the sacrifices they made during wars. Different countries handle this differently, some openly support veterans through government programs and others ignoring them. Veterans are also subject to illnesses directly related to their military service such as PTSD. War veterans are generally treated with great respect and honor for their contribution to the world and country by their own nationals. Conversely there are often negative feelings towards the veterans of alien nations held long after the war is over, for example towards the German Nazi soldiers, but they are no less veterans of war than those of the winning side. There are exceptions. Veterans of unpopular conflicts, such as the Vietnam War, have been discriminated against. Others, such as veterans of conflicts like the Korean War, are often forgotten (even though the casualty rate in Korea was higher than that experienced in the Vietnam War) when compared with those who fought in the World Wars. In some countries with strong anti-military traditions (e.g., Germany after 1945) veterans are neither honored in any special way by the general public, nor have their dedicated Veterans Day, although events are sometimes orchestrated by Neo-Nazis and other minority right-wing groups.

Gary Alan Sinise ( /səˈniːs/; born March 17, 1955) is an American actor, film director and musician. During his career, Sinise has won various awards including an Emmy and a Golden Globe Award and was nominated for an Academy Award. In 1992, Sinise directed, and played the role of George Milton in the successful film adaptation of Of Mice and Men. Sinise was nominated for the Academy Award for Best Supporting Actor in 1994 for his role as Lt. Dan Taylor in Forrest Gump. He won a Golden Globe Award for his role in Truman, as Harry S. Truman. In 1996, he played a corrupt police officer in the dramatic hit Ransom, Detective Jimmy Shaker. In 1998, Sinise was awarded an Emmy Award for the television film George Wallace, a portrayal of the late George C. Wallace. Since 2004, Sinise has starred in CBS's CSI: NY as Detective Mac Taylor.

Sinise was born in Blue Island, Illinois, the son of Mylles S. (née Alsip; b. 1932) and Robert L. Sinise (b. 1931), the latter of whom was a film editor. He is of part Italian ancestry (from his paternal grandfather). He attended Highland Park High School in Highland Park, Illinois. In 1974, Sinise and two friends, Terry Kinney and Jeff Perry, founded the Steppenwolf Theatre Company. Since its founding, Steppenwolf has showcased the talents of such notable actors as Joan Allen, Kevin Anderson, Gary Cole, Ethan Hawke, Glenne Headly, John Mahoney, John Malkovich, Laurie Metcalf, Martha Plimpton, Jim True-Frost and most recently William Petersen. At Steppenwolf, Sinise honed his acting and directing skills, received a Joseph Jefferson Award for his direction of Lyle Kessler's play Orphans, that took him from Chicago, to New York City to London's West End, and worked on more than thirty of the company's productions.