Thistwo-partdramadocumentarytellstheepicstoryoftheAllies’finesthour-andtheinventionofmodernwarfare.Thefirstepisode,TheSpringOffensive,beginsinearly1918,atamomentofmaximumjeopardyfortheAllies.                                        　　InthefamouswordsofFieldMarshalHaig,theyhadtheir"backstothewall"asagreatGermanattacksweptwestwardinafinalbidtowinthebloodi...