Since when he Francis Wallace Grenfell's rank in the British Army been the highest rank?
Francis Grenfell, 1st Baron Grenfell Field Marshal Francis Wallace Grenfell, 1st Baron Grenfell, GCB, GCMG, PC (29 April 1841 – 27 January 1925) was a British Army officer. After serving as aide-de-camp to the Commander-in-Chief, South Africa, he fought in the 9th Xhosa War, the Anglo-Zulu War and then the Anglo-Egyptian War. He went on to become Sirdar (Commander-in-Chief) of the Egyptian Army and commanded the forces at the Battle of Suakin in December 1888 and at the Battle of Toski in August 1889 during the Mahdist War. After that he became Governor of Malta and then Commander-in-Chief, Ireland before retiring in 1908.
Baron Grenfell Baron Grenfell, of Kilvey in the County of Glamorgan, is a title in the Peerage of the United Kingdom. It was created on 15 July 1902 for the military commander Sir Francis Grenfell. His eldest son, the second Baron, was Deputy Speaker of the House of Lords and Chairman of Committees from 1963 to 1976. s of 2010 the title is held by the latter's son, the third Baron, who succeeded in 1976. He previously worked for the World Bank. Lord Grenfell lost his seat in the House of Lords after the passing of the House of Lords Act of 1999. However, in 2000 he was made a life peer as Baron Grenfell of Kilvey, of Kilvey in the County of Swansea, and was able to return to the House of Lords.