OSS/London: Special Operations Branch and Secret Intelligence Branch War Diaries is a themed microfilm collection relating to US Office of Strategic Services (OSS)intelligence analyses and special operations in Western Europe, Jun 1942-Jun 1945. The collection includes Special Operations Branch organisation charts and directives, orders and summaries, Jun 1942-Jul 1944; Special Operations (SO) Branch and OSS training schedules; papers relating to Special Operations Branch liaison with Scandinavian Special Operations Executive (SOE) Section; reports on military and strategic objectives relating to Operation OVERLORD, the Allied invasion of France, Jan-Sep 1944; estimates of Special Operations personnel strength, Apr-Jun 1944; reports on resistance movements in Norway, Denmark, and Poland; summaries of Secret Intelligence Branch Operations, Apr-Sep 1944; list of decorations, commendations, and payments to families of the Special Operations and Secret Intelligence Branch casualties; biographies of Secret Intelligence personnel; reports from Secret Intelligence Branch operations in the Netherlands, France, Poland, Czechoslovakia; Germany; Secret Intelligence Branch liaison with the OSS; photographs of American and British Special Operations Branch officers; photographs of Maquis, French resistance, operatives; report from the Special Mission on German Methods of Demolition and Sabotage, Sep-Dec 1944; reports on Polish resistance fighters in France, 1944; lists of code names and code words used by the Special Operations Branch; reports from military, demolition, intelligence gathering, and espionage missions in Western Europe, 1944; after action summaries from the OSS Reports and Registry Division, London, and the OSS Reports Board, Paris, France, 1 Jan-15 Jun 1945.

Papers of Brig George Fothergill Ellenberger, 1916-1932, including operational orders for 64 Infantry Bde, 21 Div, Western Front, May 1916-Nov 1917, including assault on Flers-Courcelette, Battle of the Somme, Sep 1916, Battle of Arras, Apr 1917, and Third Battle of Ypres, Oct 1917; facsimile of report by Ellenberger and Maj William Wyndham Torrs Torr, West Yorkshire Regiment, on a reconnaissance of eastern Belgium and Luxembourg, 1930; two facsimiles of reports by Ellenberger on military liaison tours to Czechoslovakia, Hungary and Austria, 1930-1931; facsimile of report by Ellenberger on the political situation in Austria and Hungary, 1931; facsimile of report by Ellenberger on the growth of National Socialism in Austria, 1932.