 Nyorai kupfuurira kweiyi ndima - Cartland akawana chinzvimbo chaMajor muuto reBritain. Muna February 1937, akaiswa muuto reTerritorial Army. Pakazosvika August 1939, akanga ari lieutenant muWorcestershire neOxfordshire Yeomanry. Apo vaGermany vakatanga French uye Low Countries mushandirapamwe muna May 1940, akanga achishumira muna 53rd Anti-Tank Regiment The Worcestershire Yeomanry, Royal Artillery. Boka racho rakapiwa basa rokudzivirira taundi reCassel, nzvimbo iri pamusoro pegomo pedyo nomumwe wemigwagwa mikuru inoenda kuchiteshi chengarava cheChannel cheDunkirk, muFrance. Cartland navarume vake vakabvisa vaGermany kubva pana 27 kusvika 29 May. Manheru emusi wa 29 May, Cartland nechikamu chake vakaparadzana ndokubatana neBritish Expeditionary Force, iyo yakanga ichienda kuDunkirk. Musi waMay 30, 1940 panguva yeHondo yeDunkirk, apo akanga achiongorora nzvimbo yake kubva mugomba, akapfurwa ndokuurawa pedyo neWatou, Belgium. 