Heck I didn't know this:
he became a member of the National Socialist party and a sponsoring member ("Förderndes Mitglied") of the Schutzstaffel (SS)
Boss used about 30 to 40 prisoners of war and about 150 forced (i.e. slave) labourers, from the Baltic States, Belgium, France, Italy, Austria, Poland, Czechoslovakia, and the Soviet Union
But they did reach a $5 billion settlement with survivors so I guess they've paid to put it behind them now
http://en.wikipedia.org/wiki/Hugo_Boss#History