Correspondence

The origins of the Anglo-American intelligence relationship are usually dated to the early years of the Second World War. This article suggests that the First World War interaction between the intelligence staffs of the British and American Expeditionary Forces was a significant precursor to the emergence of the later relationship. Using primarily American archival sources, the article reveals an intimacy that emerged in the summer of 1917 and continued, to a lesser extent, until the armistice. The emergence of this close relationship is attributed to a common language, independent-minded intelligence leaders, and an element of chance.