Before the end of the First World War, he was appointed one of three principal architects for the Imperial War Graves Commission (now Commonwealth War Graves Commission) and was involved with the creation of many monuments to commemorate the dead. Larger cemeteries have a Stone of Remembrance, designed by him. The best known of these monuments are the Cenotaph in Whitehall, Westminster, and the Memorial to the Missing of the Somme, Thiepval. The Cenotaph was originally commissioned by David Lloyd George as a temporary structure to be the centrepiece of the Allied Victory Parade in 1919. Lloyd George proposed a catafalque, a low empty platform, but it was Lutyens' idea for the taller monument. The design took less than six hours to complete. Lutyens also designed many other war memorials, and others are based on or inspired by Lutyens' designs. Examples of Lutyens' other war memorials include the War Memorial Gardens in Dublin, the Tower Hill memorial, the Manchester Cenotaph and the Arch of Remembrance memorial in Leicester.