TheCodeBreakers
moved to the nearby town of Hermsdorf. The odyssey of Pers z did not
end even there, however. In February, 1945, the advance of the Russians
compelled each group to move
about 150 miles west. The mathematicians evacuated to Zschepplin
Castle, near Eilenburg, about 80 miles south of Berlin. The linguists,
joined by a few mathematicians to strip current superencipherments,
moved into a wing of Burgscheidungen Castle near Naumburg, northwest
of Wiemar. Here, as wartime guests of the Count von der Schulenburg
and his five daughters, the 90 cryptanalysts, some with their wives, lived
and worked amid art treasures and ancient furniture, handicapped by
the almost total lack of liaison with the mathematicians, about 50 miles
away.
The ever-present problems of security added to the difficulties of Pers
z. Ink was not permitted because it required blotting paper. Each night
all papers had to be locked away
annaabi.ee 
