Friedrich Wilhelm refers to several historical figures, most notably Friedrich Wilhelm I and Friedrich Wilhelm II of Prussia. Friedrich Wilhelm I (1688-1740) was known for his military reforms and establishing a strong centralized state. He focused on building a powerful army and is often called the "Soldier King." Friedrich Wilhelm II (1712-1786), also known as Frederick the Great, was his son and is famous for his military successes during the Seven Years' War. He promoted the arts and education, transforming Prussia into a significant European power. Both rulers played crucial roles in shaping Prussian history.