During his 27-year-reign, King Frederick William I of Prussia greatly expanded the size of the Prussian Army, turning it into the largest and one of the best equipped and trained armies in Europe. Frederick William I was particularly focused on creating a well-trained and efficient military force to protect and advance the interests of the Prussian state. The military reforms initiated by Frederick William I laid the foundation for the later successes of Prussia under the leadership of his son, Frederick II, who turned the state from a small German kingdom into a great European power.
Frederick William I inspecting his Potsdam Giants.
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