A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following reports on Czechoslovakia: of the SS in Prague being informed that the Germans are advancing to Prague, on May 6; Army Group Centre reports the Soviets are closing in on Olomuec, on May 5; on an unidentified battle HQ at Littau, on May 6; of law and order being ruthlessly restored in Prague, on May 6; that an SS regiment is en route to Prague, on May 6; and that SS Fieldmarshal Schoerner orders all disturbances to be stifled with brutality, on May 5; on South Europe: that High Command is no longer able to supply fuel to Army Group South, on May 3; on Germany: that a report centre is to be set up in Judenburg for the delivery of supplies to the Commander in Chief (C-in-C) West, on May 3; and on the 7th Army's battle HQ being located near Pilsen, on May 4; and on South-east Europe: that the Commandant for the Eastern Aegean pledges loyalty to Doenitz of the German troops in the Aegean, on May 4.