Brutus has calmed himself after a turbulent time and he is fully awake when the ghost manifests. The dying flame of his lamp announces the ghost's presence.
A soldier is one who fights as part of a land-based army. A soldier can be an enlisted person, a non-commissioned officer, or an officer in the army.
Most dictionaries define veteran as (1) A person who has served in the armed forces, or (2) An old soldier who has seen long service. Using the dictionary definition, one would be a military veteran with just one day of military service, even with a dishonorable discharge. In actuality, there is no standardized legal definition of military veteran in the United States. You see, veteran benefits weren't created all at one time.