 German documents captured after the war showed that Operation Penknife was successful in concealing the movement of Canadian troops from Italy to Belgium.Until late March, German intelligence maps showed the Canadians to be at various places in Italy.On March 17, when all Canadians were either in Belgium or northern France, the Germans still believed the Canadians were in the Ancona area, although the exact location of the 1st Canadian Armoured Brigade was unknown.