Source: March 1919 casualty search via CWGC.
Family Search: When Sergeant William Milne Rennie was born on 15 December 1893, in Aberdeen, Aberdeenshire, Scotland, United Kingdom, his father, Alexander Rennie, was 28 and his mother, Wilhelmina Jane Cheyne Johnston, was 26. He immigrated to Canada in 1913 and lived in Old Aberdeen, Aberdeen, Aberdeenshire, Scotland, United Kingdom in 1901. He registered for military service in 1915. In 1915, at the age of 22, his occupation is listed as labourer in Hamilton, Wentworth, Ontario, Canada. He died on 3 March 1919, in Wimereux, Pas-de-Calais, France, at the age of 25, and was buried in Wimille, Pas-de-Calais, France.
Duplicate reg. no. of 406797 of Rose in 18th Battalion. 406792 is correct.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 