During which war was the German Shepherd trained dog of Allied Forces popularized by traveling troops?

The German Shepherd dog was popularized by traveling troops during World War I.

Here's why:

* Military Use: German Shepherds were already known for their intelligence and obedience, but their use in the military during World War I brought them to the forefront. They were trained for various tasks such as scouting, guarding, and message carrying.

* "War Dog" Image: The heroic deeds of German Shepherds during the war solidified their image as loyal and brave "war dogs."

* Return to Civilian Life: When soldiers returned home after the war, many brought their beloved German Shepherds with them, leading to the breed's increasing popularity as a companion animal.

While German Shepherds continued to serve in World War II and beyond, their initial rise to fame can be traced back to their wartime contributions in World War I.