USSBS meaning in Governmental ?

The United States Strategic Bombing Survey was a written report created by a board of experts assembled to produce an impartial assessment of the effects of Anglo-American strategic bombing of Nazi Germany during the European theatre of World War II. After publishing its report, the Survey members then turned their attention to the efforts against Imperial Japan during the Pacific War, including a separate section on the recent use of the atomic bombs.

In total, the reports contained 208 volumes for Europe and another 108 for the Pacific, comprising thousands of pages. The reports' conclusions were generally favorable about the contributions of Allied strategic bombing towards victory, calling it "decisive".

A majority of the Survey's members were civilians in positions of influence on the various committees of the survey. Only one position of some influence was given to a prominent military officer, USAAF General Orvil A. Anderson, and that only in an advisory capacity. Anderson was the only one on the survey board who knew about procedures of strategic bombing as Jimmy Doolittle's former deputy commander of operations. While the Board was not associated with any branch of the military, it was established by General Hap Arnold along with Carl A. Spaatz. Failing to obtain the prominent public figure he had hoped for, Arnold settled for Franklin D'Olier.