Lieutenant General Sir Louis Ridley Vaughan, was a British Indian Army staff officer and First World War general. During the First World War, he served on the Western Front, and was chief of staff to General Sir Julian Byng, commander of the Third Army from May 1917 until the end of the war. After the war, he served in the Third Anglo-Afghan War of 1919, and then held several army positions in India until his retirement in 1928. He died in 1942 at the age of 67.

Field Marshal Herbert Charles Onslow Plumer, 1st Viscount Plumer, was a senior British Army officer of the First World War. After commanding V Corps at the Second Battle of Ypres in April 1915, he took command of the Second Army in May 1915 and in June 1917 won an overwhelming victory over the German Army at the Battle of Messines, which started with the simultaneous explosion of a series of mines placed by the Royal Engineers' tunnelling companies beneath German lines, which created 19 large craters and was described as the loudest explosion in human history. He later served as Commander-in-Chief of the British Army of the Rhine and then as Governor of Malta before becoming High Commissioner of the British Mandate for Palestine in 1925 and retiring in 1928.