[9] In October 1915, the ship was refitted and transferred to the North America and West Indies Station for convoy duties.

After the end of the Great War, on 9 April 1920 Smith took command of the dreadnought HMS Ramillies[12] and was also appointed as a naval aide-de-camp to King George V.[2] Ramillies took part in the Greek Summer Offensive of 1920 and in June was one of the British ships which bombarded Turkish Nationalist troops of Mustafa Kemal on the Ismid peninsula in the Sea of Marmora, following an attack by Kemal's forces on a British outpost.

He headed a British naval mission to Greece from 1921 to 1923, during the continuation of the Greek and Turkish War, and then served as Admiralty Representative to the League of Nations from 1923 to 1927.

[1] In July 1939, he hosted a dinner party at his house in Gloucester Place, Marylebone, at which Count Gerhard von Schwerin, an officer of the German War Ministry's intelligence section, met James Stuart, representing the government, Admiral John Godfrey, head of naval intelligence, and General Sir James Marshall-Cornwall, director general of air and coastal defence, to warn them of Hitler's intention to attack Poland.

[16][17] When Smith died on 6 October 1957 he was still living at Iden Cottage and left an estate valued at £29,998.