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: BONIFACE summaries for Mr Loxley - some texts are reported in 6075; that heavy Allied attacks in Cassino were repulsed; that Rab island, in the north Adriatic, was occupied by the Germans on March 19; that the 1st German Mountain Division, formerly in northern Yugoslavia, has been identified inside Hungary; of German apprehensions about the effects of the Soviets crossing the Dniester and their probable advance between the Dniester and Pruth; of German forces being encircled in Shmerinka; and on German aircraft losses over Germany.