Private Francisco Castellano, a Spanish volunteer attached to 'D' Bn. Layforce, was reported missing 2 June 1941 during operations in Crete, later found to be a prisoner of war.
Casualty Lists / National Archives files WO417/28 and WO417/34..
Prisoners of War / National Archives files WO392/10 and WO392/20.
German Record Cards of British POWs / National Archives file WO416/60/208.