By July 1918, the First World War had raged for nearly four years. Private First Class Adolf Hitler of the 16th Bavarian Reserve Infantry Regiment had served in it almost from the very beginning. He had seen the German Reich defy the mighty coalition consisting of the Entente empires Britain, France and Russia as well as a number of smaller powers. Towards the end of the previous year, one of them - the Tsarist Empire - had been brought to its knees by a combination of military defeat and revolution. In the meantime, however, the Reich had provoked the antagonism of another and even more formidable power: the United States.
- From Hitler: A Global Biography by Brendan Simms