Discover key moments from history and stories about fascinating people on the Official BBC Documentary channel: http://bit.ly/BBCDocs_YouTube_Channel In this collection of archive footage and interviews, the introduction and training of United States soldiers to the Allied cause in the First World War is discussed. Fascinating clip from the BBC documentary Timewatch: Body Hunters - The Unknown Soldiers. Watch more high quality videos on the new BBC Worldwide YouTube channel here: http://www.youtube.com/bbcworldwide This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: https://www.bbcstudios.com/contact/contact-us/