In September 1914 , he and his brother Percy , were both promoted to acting Second Lieutenant .
With the outbreak of World War I , Stout joined the British Army and was posted to the 20th Hussars .
In September 1914 , Stout and Stout 's brother Percy , were both promoted to acting Second Lieutenant .
With the outbreak of World War I , Stout joined the British Army and was posted to the 20th Hussars .