Coded Nazi messages intercepted by Britain could have exposed the scope of the Holocaust years before the liberation of the death camps, but Allied codebreakers failed to fully understand the information they had, according to US government analysis of intelligence from the era.
In what is being likened to the intelligence failures before the September 11 attacks, German military and police communications from as early as 1941 provided lurid but fragmentary accounts of the massacres and deportations, and later even statistics on the numbers killed in concentration camps.
According to the report titled Eavesdropping on Hell, by Robert Hanyok, a historian with the National Security Agency's center for cryptologic history, British and US efforts to sort evidence were hampered by case backlogs and a shortage of translators, as well as the two allies' reluctance to share information about German communications.
http://www.taipeitimes.com/News/world/archives/2005/08/02/2003266104