Was General Von Francois Justified in His Actions During the Battle of Tannenberg

In 1913 Russia and France had arranged that the Russians should make a rapid advance against the Germans in East Prussia in order to create a diversion to relieve the pressure against the French on the Western Front. This advance into East Prussia was to be made by the First Army (General Rennenkampf) and Second Army(General Samsonoff) both armies under the command of General Jilinsky.