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In this scene, German submarines attack any and all ships they encounter, whether military or civilian. Subscribe for more WWI: https://www.youtube.com/channel/UC9MAhZQQd9egwWCxrwSIsJQ?sub_confirmation=1 Check out our Facebook games, and other exclusive content: https://www.facebook.com/History Keep up to date with everything HISTORY by following us on Twitter: https://twitter.com/history Don't miss a new episode! Sign up for WWI email updates: http://www.history.com/emails/sign-up Follow HISTORY on StumbleUpon: http://www.stumbleupon.com/channel/HISTORY WWI: The First Modern War Season 1 Underwater Killers HISTORY®, now reaching more than 98 million homes, is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, epic miniseries, and scripted event programming. Visit us at HISTORY.com for more info.