It is true that General Helmuth Weidling ordered Axmann to disband the Hitler Youth combat formations, in the confusion this order was never carried out. The remnants of the youth brigade took heavy casualties from the advancing Russian forces; only two survived.
On April 27, 1945, Berlin had been encircled. The Soviet 1st Belorussian front had defeated the German troops based in Berlin. The Soviets already controlled Siemestadt and the Railway station in the East side of Berlin. That is when Weidling realized that the last line of German troops where the Hitler Youth and ordered its leader, ArthurAxmann, to disband the Hitler Youth combat formations. But in the confusion this order was never carried out.
