During World War I, about eight million men surrendered and were held in POW camps until the war ended. All nations pledged to follow the Hague rules on fair treatment of prisoners of war, and in general the POWs had a much higher survival rate than their peers who were not captured.  Individual surrenders were uncommon; usually a large unit surrendered all its men. At Tannenberg 92,000 Russians surrendered during the battle. When the besieged garrison of Kaunas surrendered in 1915, 20,000 Russians became prisoners. Over half the Russian losses were prisoners as a proportion of those captured, wounded or killed. About million men became prisoners. 
Two close advisers to the president contributed a piece to the Wall Street Journal this week that can be seen as something like a "Trump Doctrine." "The world is not a 'global community,'" wrote Gary Cohn and Herbert Raymond McMaster, Trump's economic and security advisers. The subtext is clear: The global order, which the United States helped build, belongs to the past. There are no alliances anymore, just individual interests -- no allies, just competitors. It was a clear signal to America's erstwhile Western allies that they can no longer rely on the United States as a partner.