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Helmuth von Moltke the Younger was the renowned nephew of Moltke the Elder. Both were prominent Prussian military strategists and generals. The Younger Moltke served as Chief of the German General Staff from 1857 to 1888, playing a pivotal role in the unification of Germany and the Franco-Prussian War. He is widely regarded as one of the most influential military thinkers of the 19th century.