Letters from Marshall to his brother, John Eden Marshall (1864-1937), the Hon Mr Justice Marshall, Judge in Egyptian Court of Appeal, written throughout World War One, including chatty, if brief, descriptions of his service in Gallipoli, Salonika and Mesopotamia, where he became Commander in Chief of the Mesopotamian Expeditionary Force in Nov 1917, 1915-1919. The great bulk of the letters are therefore written from Mesopotamia, 1916-1919, and include Marshall's descriptions of the second Battle of Kut el Amara, Dec 1916; the advance to and the fall of Baghdad, Mar 1917, with impressions of the city; the Battle of Band-i-Adhaim, 30 Apr 1917; the building of railways and improvement of communications along the British front line; commentary on the progress of the war on the Western, Eastern and Southern fronts; commentary on the progress of the British forces under Gen Sir Edmund Henry Hynman Allenby on the Palestine front, 1917-1919; the clearance of Jebel Hamrin and the River Diyala, Mesopotamia, Oct 1917; the 'Dunsterforce' operation in Persia, 1918; the advance up the Euphrates and the taking of Hit and Khan Baghdadi, Mar-May 1918; the final offensive on the Tigris, Oct-Nov 1918, culminating in the signing of an armistice with the Turks on 30 Oct, 1918.