 Very soon afterward, Serbia was invaded by combined Austro-Hungarian, German and Bulgarian forces, on 13 October, the baby hospital ceased to exist and became a field ambulance to care for the sick and wounded Serbian soldiers.According to historian Barbara Tuchman, during the first and second world war, Mable Grouitch was involved in the recruitment of agents for the British Naval Intelligence.She died on 13 August 1956 in a Georgetown hospital of leukemia in Washington D.C.