dog-robber
noun
1
an officer's assistant US, 1863.
2
a person assigned the most menial of tasks, especially the acquisition of difficult-to-acquire goods and services US, 1974.
3
in the film and television industries, a person whose job it is to find difficult-to-find goods for props US, 2002.
4
during the Vietnam war, someone assigned to the rear area as seen by someone in combat US, 1991