Who was doughboy?

"Doughboy" is a term commonly used to refer to American soldiers during World War I. The origin of the term is debated, but it is often thought to derive from the dough-like appearance of their uniforms or the doughnut-shaped buttons on their uniforms. The term became emblematic of American troops and their experiences during the war, symbolizing their youth and bravery in the face of adversity. Additionally, "Doughboy" has been used in various cultural references to represent American military history.