[2] He studied at the Lambeth School of Art in England[3] under William Silver Frith[4] before enrolling as a student in the Royal Academy in 1889.

At the Royal Academy, he was taught by Henry Hugh Armstead and Sir Joseph Edgar Boehm.

The memorial consists of a three-stepped base surmounted by a plinth, pedestal and figure of a soldier of the Worcester Regiment kneeling as he prepares to fire his last cartridge.

[22] The Royal Artillery Boer War Memorial is on the corner of St James's Park in The Mall in central London.

The memorial was designed by Sir Aston Webb and the bronze sculpture, including Pegasus and the two relief tablets, were executed by Colton.

"[23] The pillars list the 1,078 men who died in the South African war of 1899-1902 and relief panels show the unit in action.

William Thomas Wyllie served with the 2nd Durham Light Infantry and was killed in action at Montauban on the Somme on 19 July 1916.

[26][27] The memorial tablet dedicated to Captain Frederick Selous DSO is positioned at the head of the northwest staircase in the Central Hall of the Natural History Museum, London.

The memorial consists of a cast bronze portrait of Captain Selous in uniform and carrying a rifle.

[28] At St Dunstan's Church, Cranbrook, Kent, there is an alabaster memorial to Boyd and Claud Alexander who both died in Africa.

Boyd Alexander served in the Rifle Brigade and was killed at Nyeri, Wadai, on 2 April 1910 and is remembered on the left side panel; Claud Alexander who served in the Scots Guards and died at Maifoni on 13 November 1904 is remembered on the right side panel.

A representation of Africa in the form of a female figure holding arrows is positioned in the centre with busts of the two dead men on either side.

[29] The memorial, on Victoria Road, Stafford, was designed by Colton but his early death meant that the sculptor L. S. Merrifield had to complete the work.

[5] Robert Colton died aged 53 on 13 November 1921 at St Mary Abbot's Place, Kensington.