sentences:  FSB Mary Ann was initially established on 19 February 1970 by elements of the 1/46th Infantry (part of the 196th Light Infantry Brigade (196th LIB).At the time it was not intended to be a permanent base, and was closed by the same Battalion about two months after it was opened.Operational needs brought the 1/46th Infantry back to Mary Ann on 27 June, and the base was put back into operation.