A war song is a musical composition that relates to war, or a society's attitudes towards war. They may be pro-war, anti-war, or simply a description of everyday life during war times. It is possible to classify these songs by historical, conflict: "First World War songs", "Second World War songs", "Vietnam War songs", and so on. There is also a miscellaneous category of recruiting songs, anti-pacifist songs, complaints about mess rations, excessive drilling and so on. Many national anthems are either a call to arms, or a celebration of military victories and past glories. There were a handful[citation needed] of anti-war songs before 1939, but this category has grown enormously since the start of the Vietnam War. On the other hand, new songs that are pro-war are becoming less common. Some