With the outbreak of the Second World War, most men fit for service were conscripted. The shortfall in agricultural labour was offset by prisoners of war from France and slave labour from the German-occupied territories in Eastern Europe. Jettenbach went through the war unscathed by direct military action, though near war's end, as German troops withdrew ahead of the Allied advance, they were often billeted temporarily in Jettenbach. The last German troops left Jettenbach about midday on 17 March 1945. Outside the village, they quickly found themselves under attack by American airmen. Just over two days later, the first United States Army troops arrived in the village.