billet

(noun) a short personal letter. Synonyms: note, short letter, line. Example: "Drop me a line when you get there."

(noun) lodging for military personnel (especially in a private home).

(noun) a job in an organization. Synonyms: position, post, berth, office, spot, place, situation. Example: "He occupied a post in the treasury."

(verb) provide housing for (military personnel). Synonyms: quarter, canton.