Mezue ahịrịokwu na-esonụ: McLeay sonyere n'Òtù Ndị Agha Alaeze Ukwu Australia (AIF) na May 1915. O jere ozi n'òtù ndị ọrụ ahụ ike na Middle East nakwa na Western Front. Mgbe ọ nọ na France dị ka onye na-ebugharị ihe na 13th Field Ambulance, e nyere ya ihe nrite ndị agha maka obi ike n'ụbọchị mmeghe nke
Agha nke Abụọ nke Villers-Bretonneux n'April 1918. A chụrụ ya n'ọrụ agha n'October 1919.