The first period lasted from the Revolution until the Armistice. Already on the date of the Revolution, Cossack General Alexey Kaledin refused to recognize it and assumed full governmental authority in the Don region, where the Volunteer Army began amassing support. The signing of the Treaty of Brest-Litovsk also resulted in direct Allied intervention in Russia and the arming of military forces opposed to the Bolshevik government. There were also many German commanders who offered support against the Bolsheviks, fearing a confrontation with them was impending as well.