Mobilization was nearly completed when I paid my first visit to the Servian War Office, an unpretentious building situated half way down a side street leading from the Royal Palace to the River Save. On entering, I congratulated myself that, at last, I was to meet and speak with a real Servian; hitherto I had met nearly every other nationality in the legations, hotels, and other places frequented by visitors to foreign capitals. At the time of my visit, the only society in Belgrade consisted of foreign diplomats; the hotels were managed and staffed by Austrians, Swiss and Italians; the roads were being paved by an Austrian contractor, employing Austrian workmen and, according to current gossip, the country was being ruled by the Russian Minister. Now that hostilities were imminent, I presumed that the Servians would be allowed to do their own fighting. This supposition proved to be correct, the Great Powers had decided not to interfere in what was a purely Balkan struggle, they intended to keep the ring and see fair play. So much I had already learned in Belgrade, from people in a position to know and who seemed to know most things except the authentic Plan of Campaign. Their resentment at not being given this was evident, and when asked the reason, they would reply that they wanted to communicate it to their respective governments and War Offices, in the strictest confidence of course. The Servian General Staff had kept their secret well, far too well for the cosmopolitan band who earned their living by acquiring and circulating _strictly confidential information_. I did not expect to solve the mystery myself, but the prospect of getting to close quarters with its authors gave me some satisfaction. I had begun to admire these men one never met, who didn’t seem to ask for advice, though they often got it, and who were shouldering the responsibility for Servia’s future action. After being conducted to an upstairs room, I was asked to wait, Colonel ---- (then followed two names which I didn’t quite catch, but noted mentally as beginning, respectively, with a “G” and a “P”) begged to be excused for keeping me waiting, but would come as soon as he could; an unexpected visitor had arrived whose business was urgent. This information was imparted by a young staff officer, in excellent German, his message given, he left me alone with some straight-backed chairs, a table with a green baize cover, three pictures, and a large bow window facing north.