Grand Duke Nicholas was responsible for all Russian forces fighting against Germany, Austria-Hungary, and Turkey. He decided that their major effort must be in Poland, which thrust toward Germany like a salient, flanked by German East Prussia in the north, and Austro-Hungarian Galicia in the south. He planned to attend first to the flanks and when they were secure to invade German Silesia. In the north poor coordination of the two invading Russian armies resulted in the disaster of Tannenberg. In the south they conquered much of Galicia. Their subsequent move toward Silesia was blocked by the Battle of the Vistula River and Battle of Łódź. The Grand Duke picked and chose from the various plans offered by his generals. The Grand Duke begged for the artillery and ammunition they desperately lacked, so he could not embark on a coherent plan for victory. Nicholas came to power because of his royal status, and the tsar's belief that God was guiding his decision. He lacked the broad strategic sense and the ruthless drive to command all the Russian armies. His headquarters had a curiously calm atmosphere, despite the many defeats and the millions of casualties. He failed in terms of strategy and tactics, as well as logistics, selection of generals, maintaining morale, and gaining support from the government. On a personal level he was well liked by both officers and men.