 <unk> but not yet dissuaded from the possibility of action , the Allies formulated a new plan on 29 January . First , the Finns would make a formal request for assistance . Then the Allies would ask Norway and Sweden for permission to move the " volunteers " across their territory . Finally , in order to protect the supply line from German actions , the Allies would send additional units ashore at Namsos , Bergen , and Trondheim . The operation would require 100 @,@ 000 British and 35 @,@ 000 French soldiers with naval and air support . The supply convoys would sail on 12 March and the landings would begin on 20 March . 
