Excerpts from Books and Wikipedia
"But in 1898 the Sirdar (commander) of the Anglo-Egyptian army, Sir Herbert Kitchener, moved with 27,600 Egyptian troops and 8000 British regulars, supported by a flotilla of 12 Nile gunboats, on the Mahdist capital Omdurman, outside Khartoum, where the Mahdi's successor Khalifa Abd Allah had established his capital… They were mown down by newly delivered Maxim machine guns, and the rout was complete by a charge--the last large-scale cavalry charge by a European army--of the 21st Lancers, including the young Winston Churchill." [1001 Days]