General George Marshall complained to Morgenthau that German resistance had strengthened. Hoping to get Morgenthau to relent on his plan for Germany, President Roosevelt's son-in-law Lt. Colonel John Boettiger who worked in the War Department explained to Morgenthau how the American troops who had had to fight for five weeks against fierce German resistance to capture the city of Aachen had complained to him that the Morgenthau Plan was "worth thirty divisions to the Germans." Morgenthau refused to relent.