The Armistice of Versailles that came into effect on 28 January 1871 brought to an end the active phase of the Franco-Prussian War. The signatories were Jules Favre, foreign minister in the provisional Government of National Defence, for the French and Otto von Bismarck, chancellor of the newly established German Empire, for Prussia and her allies. The suspension of hostilities initially lasted until 19 February, when it was extended through 26 February, when a preliminary peace treaty was signed, also at Versailles. The definitive Treaty of Frankfurt was signed on 10 May. Although technically an armistice, the military position of France at the time and the terms were such that it was de facto a conditional surrender by the vanquished to the victors.