This was the impelling power which Frederick William could not resist. Step by step he went forward, postponing his plans for getting back his Polish provinces and accepting instead contingent promises. By the treaty of Kalish, already mentioned in another connection, Old Prussia was definitely guaranteed to him, and he was to have a strip connecting it with Silesia, but the territorial aggrandizement of the kingdom was to await the conquest of North Germany, all of which except Hanover might under certain circumstances be incorporated under his crown. Both parties agreed to use their best endeavors to win Austria for the coalition, Russia promising likewise to seek a subsidy from Great Britain for her impoverished ally. Another stipulation was fulfilled when on March seventeenth Frederick William called out all the successive services of the national army and, summoning his people to emancipate their country from a foreign yoke, declared war. Two days later a ringing proclamation was issued which summoned to arms not merely Prussians but even the Germans of the Rhine Confederation. Hesitating princes were threatened with loss of their domains, and--what was a very pointed hint--Stein was made head of an administrative committee to erect new governments in all occupied lands. Kutusoff's last public act was to issue a manifesto declaring that those German princes who were untrue to the German cause were ripe for destruction by the power of public opinion and the might of righteous arms.