Tony Robinson's World War I: The US joins the war
The Allies hoped their new partner in the war, America could power them to victory. But the Americans needed time to raise and train an army. Recruitment was driven by provocative propaganda posters. Americas entry into the war also created a new market for 3D stereographic pictures. Subscribe to Discovery TV for more great clips: http://www.youtube.com/subscription_c... Follow Discovery on Twitter: / discoveryuk Watch Discovery UK on SkyQ and Sky+ 125, Sky Glass & Stream 138, Sky Scotland 126, Sky ROI 125, Sky Glass & Stream ROI 134, Virgin Media 177.
