Frederick William I was the King of Prussia from 1713 until his death in 1740. He is known for his strong military focus and efforts to modernize the Prussian army, which laid the groundwork for Prussia's future military successes. His reign is often referred to as the "Soldier King" era due to his emphasis on discipline and military efficiency. In addition to military reforms, Frederick William I was also known for his frugality and administrative efficiency. He implemented various economic policies that strengthened the state and improved its finances. His legacy includes the establishment of a powerful and centralized state, which would later influence the rise of the German Empire.