How Wars BeginEpisode 5: The Second World WarBBC One Duration: 30 minutesFirst broadcast: Mon 8th Aug 1977, 23:10 on BBC One WestLatest broadcast: Sat 11th May 1991, 19:30 on BBC Two EnglandAJP Taylor, the noted historian and one of the first to popularise history through television, considers when World War II started and why.GenresFactualHistorySeriesHow Wars Begin Source: BBC Online