A "special service" is an event or assistance arranged for a specific need or occasion. It differs from the regular schedule and may be a church service, ceremony, or extra support.
For example, the opera was performed at the Ernie Pyle Theatre in Tokyo in 1970, presented by the Eighth Army Special Service. Source: Internet
The city’s Special Service Area Number 1, established in 1979, levies a tax on property owners downtown. Source: Internet
The East Pakistan military personnel were trained in combat diving, demolitions, and guerrilla/anti-guerrilla tactics by the advisers from the Special Service Group (Navy) who were also charged with intelligence data collection and management cycle. Source: Internet
St. Lucia has no army but maintains a paramilitary Special Service Unit within its police force and a coast guard. Source: Internet
In the weeks that followed, additional vessels from the United States Navy Special Service Squadron were concentrated in Honduran waters, and landing parties were put ashore at various points to protect United States interests. Source: Internet
There is a World Federation of Free Nations, including the demilitarized U.S., with a world government supported by Special Service troops. Source: Internet