Step 1 : Introduction to the question "What U.S. general was known for his sideburns?"
...Despite the fact that this particular facial hair style had been around since at least 100 BC (one of the earliest known depictions is a mosaic of Alexander the Great), sideburns were named after a specific man in the late 19th century. The man was politician, businessman, and Union Army General Ambrose ... What is the origin of the term 'sideburns'?
What is the origin of the term 'sideburns'? An American general of the nineteenth century, by the name of Ambrose E. Burnside, was immediately recognizable from his mutton chop whiskers and moustache, combined with (unusually) a clean-shaven chin.
Step 2 : Answer to the question "What U.S. general was known for his sideburns?"
Ambrose Burnside is best known for his leadership as a major general of the Union army in the Civil War and for originating the fashion of sideburns in the United States. After the war, Burnside was elected governor of Rhode Island, and he served three one-year terms. He then headed to Washington to represent Rhode Island in the U.S. Senate. Burnside would serve in Congress until his death in 1881. Beyond his battlefield exploits, Ambrose Burnside is remembered for his distinctive facial hair, a style now known as sideburns, which took its name from Burnside’s own last name.