Poland. (French Detachment in Poland). 1919. Printed Polish Red Cross post card dated '24/9/19' and written from the 'French Military Mission, Varsovie (Warsaw) addressed to Nice cancelled by 'Tresor et Postes/ 311' date stamp '27th Sept 1919'.
In the hope of achieving independence for their homeland following the war, Polish volunteers fought on the Western Front against the Germans. After the armistice these units (accompanied by their French officers) were transported home in April 1919. Military mail received a wide variety of markings related to the French Mission. Field Post Office No 311 operated in Warsaw from August 1919 to April 1922 at Polish Army Headquarters.