"The Regiment was the
only one of its type. It was required to provide generators
and floodlighting to supplement the Edinburgh Castle electricity
supply on the occasion of 'Beating the Retreat' on the Esplanade in
1948 for the local Scottish Military Bands.
With the A.A. Searchlights, a
cone of 'Artificial Moonlight' was created. From then on, the
Regiment operated the floodlights at the Tattoo, from its first
Performance in 1949.
I don't know if it still
carries out these duties as it amalgamated with the Royal Corps of
Transport back in the 70's and moved to Alnwickhill after the the
Post Office took over the site.