After a time in the Horse Guards at Whitehall, Wyke-Smith joined the crew of a windjammer and sailed to Australia and the west coast of the United States. In the American West, he worked as a cowboy. Back in England, he studied mine engineering and later managed mines in Mexico, the Sinai, South America, Spain, Portugal and Norway. During the 1913 revolution in Mexico, he rescued his wife from the capital. He built a pontoon bridge across the Suez canal during the First World War.