The Thiepval Memorial to the Missing of the Somme battlefields, designed by Sir Edwin Lutyens, bears the names of 72,194 officers and men of the United Kingdom and South African forces. These men died in the Somme battle sector before 20th March 1918 and have no known grave. Over 90 percent of those commemorated on the Thiepval Memorial died in the 1916 Battles of the Somme between July and November 1916.