War in the Twentieth Century

War film is a film genre concerned with warfare, typically about naval, air, or land battles in the twentieth century, with combat scenes central to the drama. The fateful nature of battle scenes means that war films often end with them. Themes explored include combat, survival and escape, sacrifice, the futility and inhumanity of battle, the effects of war on society, and the moral and human issues raised by war. War films are often categorised by their milieu, such as the Korean War; the most popular subject is the Second World War. The stories told may be fiction, historical drama, or biographical. Critics have noted similarities between the Western and the war film.

Nations such as China, Indonesia, Russia and Japan have their own traditions of war film, centred on their own revolutionary wars but taking varied forms, from action and historical drama to wartime romance.

Sub-genres, not necessarily distinct, include anti-war, comedy, animated, propaganda and documentary. There are similarly sub-genres of the war film in specific theatres such as the western desert (North Africa) and the Pacific in the Second World War, or films about Vietnam; and films set in specific domains of war, such as the infantry, the air, at sea, in submarines or prisoner of war camps.