Final answer:
The unique ASU leg ornamentation on lower enlisted personnel is the trouser stripe, which indicates rank and branch of service. It is worn on the outside leg seam of the pants and varies in color and pattern based on rank.
Step-by-step explanation:
The unique ASU leg ornamentation found on lower enlisted personnel is the trouser stripe. This stripe is a colored braid that is worn on the outside leg seam of the pants.
It is used to indicate the rank and branch of service of the individual.
For example, in the United States Army, lower enlisted personnel, such as privates, wear a trouser stripe in a solid color. As they advance in rank, they may wear stripes with additional colors or patterns to indicate their higher rank.
The trouser stripe serves as a visual identifier and is an important part of the military uniform, helping to distinguish individuals and maintain a sense of hierarchy within the military ranks.