More than 500 civilian workers at an Ministry of Defence (MoD) base in Stafford will lose their jobs when a distribution centre shuts in December.
The RAF is leaving Stafford after 65 years
The RAF is moving out of the town after 65 years and the base is being taken over by the Army.
Some workers have already had their jobs transferred to the MoD base in Donnington, Shropshire.
John Wilson, of the PCS union, said its members believed the base should stay open but were resigned to it closing.
They had staged an unsuccessful two-year campaign for the government to change its mind.