As a British Intelligence Officer during World War II, Hugh Trevor-Roper was expressly forbidden from keeping a diary due to the sensitive and confidential nature of his work. However, he confided a record of his thoughts in a series of slender notebooks inscribed OHMS (On His Majesty's Service). The Wartime Journals reveal the voice and experiences of Trevor-Roper, a war-time 'backroom boy' who spent most of the war engaged in highly-confidential intelligence work in England - including breaking the cipher code of the German secret service, the Abwehr. He became an expert in German resistance plots and after the war interrogated many of Hitler's immediate circle, investigated Hitler's death in the Berlin bunker and personally retrieved Hitler's will from its secret hiding place. The posthumous discovery of Trevor-Roper's secret journals - unknown even to his family and closest confidants - is an exciting archival find and provides an unusual and privileged view of the Allied war effort against Nazi Germany. At the same time they offer an engaging - sometimes mischievous - and reflective study of both the human comedy and personal tragedy of wartime.