These soldiers are usually found on the merchant-and main roads of Skyrim. They look similar to the Imperial Legion Soldier and are often running in which case they may be in a hurry. These Soldiers can be found randomly in the wilderness.
They wear a full set of Imperial Light Armor and wield an Imperial Sword during combat. They also carry an Imperial Bow with steel arrows. To supplement their main weapon, additionally they have a steel dagger.
"Can't stop to chat, citizen."
I'm not here to talk. I'm here for those documents. "Is that so?"
Never mind. "Hmph."