Final answer:
The provided texts do not explicitly state in which country Sergeant Major Morris served. However, they do detail accounts of service in the Canadian forces and the U.S. Army during World Wars I and II, hinting at the context in which individuals such as Sergeant Major Morris may have served.
Step-by-step explanation:
The question regarding in which country Sergeant Major Morris served is not directly answered in the provided reference material. However, by examining the contexts provided, we can deduce that Sergeant Major Morris could be related to the accounts of military service within these texts, possibly serving in either the United States Army or the Canadian forces during World War I. The individuals highlighted in the references served in different capacities in their respective armies, with mention of service in the No. 1 Canadian Tunneling Company and the Allied Forces of the Southwest Pacific Area during World War II under General Douglas MacArthur.
While we do not have specific information about Sergeant Major Morris, we can understand that during historic conflicts such as World War I and World War II, servicemen like those mentioned in the excerpts were often involved in pivotal roles on various fronts.