THE MILITARY BEAT by Billy R. Greene CAMP UPTON, NEW YORK      Camp Upton was built in 1917 for WW I use by the U.S. Army and could house up to 43,000 troops.  During WW I, Camp Upton served as a Division sized training camp and was closed following the armistice.       The land was retained by the War Department and in early 1941, Camp Upton was reactivated.  With the outbreak of WW II, Upton served as a reception center for II Corps and as a training center as it had in WW I.  Towards the end of WW II, Camp Upton was converted to a convalescent Hospital and several new masonry buildings were built to accommodate 3500 patients.       After WW II, the camp was closed and much of the land and buildings taken over by the Department of Energy, which used it to build a new facility  known as Brookhaven National Laboratories.       Camp Upton was located on Long Island, five miles North East of Yaphank, New York.       Plate attachment shown is from the Greene Collection.