▁Je eps ▁mentioned ▁their ▁potential ▁use ▁as ▁an ▁ins pection ▁car . ▁The ▁USA AF ▁in ▁Australia ▁used ▁fl anged - w heel ▁je eps ▁as ▁switch ers ▁in ▁ 1 9 4 3 , ▁which ▁led ▁to ▁testing ▁as ▁road - switch ers ▁for ▁future ▁operations ▁in ▁New ▁Guinea . ▁Perhaps ▁the ▁first ▁large - scale ▁use ▁of ▁je ep ▁as ▁locomot ive ▁was ▁in ▁the ▁C BI ▁theatre . ▁ ▁Ele ven ▁days ▁after ▁the ▁Norm andy ▁landing , ▁je ep ▁speed ers ▁were ▁in ▁use ▁on ▁the ▁continent , ▁surve ying ▁lines ▁for ▁use ▁or ▁repair . ▁Post war , ▁je ep ▁speed ers ▁were ▁used ▁as ▁ins pection ▁cars , ▁and ▁je ep ▁trains ▁used ▁for ▁light ▁service , ▁including ▁recre ation . ▁ ▁The ▁Je ep ▁train ▁at ▁Lewis ▁and ▁Clark ▁Ca ver ns ▁claimed ▁to ▁be ▁the ▁short est ▁je ep ▁railway . ▁Over ▁time , ▁hi - ra il ▁vehicles ▁pushed ▁dedicated ▁speed ers ▁out ▁of ▁rail ro ads ; ▁civil ian ▁je eps ▁were ▁often ▁used . ▁ ▁Australia ▁ ▁In ▁Bor neo ▁in ▁ 1 9 4 5 , ▁Australian ▁soldiers ▁converted ▁je eps ▁to ▁run ▁on ▁rails ▁in ▁order ▁to ▁compens ate ▁for ▁the ▁lack ▁of ▁locomot ives ▁on ▁a ▁narrow ▁gauge ▁railway ▁line . ▁ ▁United ▁Kingdom ▁ ▁The ▁United ▁Kingdom ▁used ▁rail worth y ▁Je eps ▁during ▁World ▁War ▁II ▁especially ▁in ▁France , ▁Germany , ▁and ▁Bur ma . ▁Je ep ▁trains ▁were ▁used ▁extens ively ▁during ▁the ▁Mal ay