Frederick William I of Prussia

Frederick William I of Hohenzollern, King of Prussia

5 min read

PoliticsMilitaryEarly ModernEarly 18th-century Europe, marked by absolutism and the rising power of Hohenzollern Prussia.

King of Prussia from 1713 to 1740, nicknamed the “Soldier King.” A rigorous and thrifty administrator, he reorganized the Prussian state and built a powerful army that turned Prussia into a major European military power.

Frequently asked questions

Frederick William I was king of Prussia from 1713 to 1740. The key thing to remember is that he transformed his kingdom into a formidable military and administrative machine, so much so that he was nicknamed the “Soldier King” (Soldatenkönig). What is striking here is that he himself wore the blue infantry uniform, inspected his troops daily and imposed iron discipline, far removed from the splendor of other absolutist sovereigns. His obsession with the army and a rigorous economy made Prussia a major European military power.

Key Facts

  • Becomes King of Prussia in 1713 upon the death of his father Frederick I
  • Nicknamed the “Soldier King” for his obsession with the army and discipline
  • Doubles the size of the Prussian army and creates a centralized, thrifty administration
  • Gives the Amber Room to Tsar Peter the Great in 1716, sealing the Russo-Prussian alliance
  • Dies in 1740, leaving his son Frederick II a solid state and a formidable army

Works & Achievements

Creation of the Generaldirektorium (1723)

A central administration unifying finances, war, and the management of royal domains, laying the foundations of the modern Prussian bureaucracy.

Reform of the Prussian army (1713-1740)

He expanded the army from about 40,000 to more than 80,000 men, making it one of the most disciplined in Europe despite the kingdom's modest size.

Canton system (Kantonsystem) (1733)

A territorial organization of military recruitment that gave Prussia a permanent pool of soldiers without ruining its agriculture.

Edict of compulsory schooling (1717)

One of the first measures in Europe to make school attendance compulsory, laying the groundwork for the Prussian education system.

Welcoming the Protestants of Salzburg (1732)

The settlement of more than 15,000 Protestant refugees in East Prussia, repopulating and developing devastated lands.

Restoring the state's finances (1713-1740)

Through rigorous economy, he left at his death a considerable war chest, a decisive asset for his successor Frederick II.

Anecdotes

Nicknamed the "Soldier King," Frederick William I was obsessed with his personal guard, the "Potsdam Giants": he recruited exceptionally tall soldiers from all over Europe, going so far as to buy them, kidnap them, or forcibly marry them to tall women in order to father giant sons.

Loathing the luxury of his father's court, he drastically cut palace spending as soon as he came to power in 1713, selling the royal silverware and jewels to replenish the state's coffers and fund the army.

He was so hot-tempered and authoritarian that he sometimes beat his subjects in the street with his cane when they were not working fast enough for his liking, shouting: "You must not fear me, you must love me!"

His relationship with his son, the future Frederick II, was violent: when the young prince tried to flee in 1730 with his friend Hans Hermann von Katte, the king had Katte executed before his son's eyes as a punishment.

A lover of tobacco and beer, he held a "Tabakskollegium" (tobacco college), an informal evening gathering where ministers, generals, and guests would smoke and discuss affairs of state in a rough, etiquette-free atmosphere.

Primary Sources

Political Instruction for His Successor (Political Testament) (1722)
A strong army and a well-stocked treasury are the best guarantors of a state's peace and security; take care never to let them fall into decline.
Memoirs of Frederick II (on his father) (around 1740)
My father reduced all things to military order and the strictest economy; he regarded spending as the greatest of evils.
Edict on Compulsory Education (Principia regulativa) (1717)
Parents shall be required to send their children to school, so that none may remain in ignorance.

Key Places

Berlin

Capital of the Kingdom of Prussia, where the king was born and ruled, reforming the state's administration and finances.

Potsdam

A residence and garrison town dear to the king, where his famous “Potsdam Giants” guard was stationed. He turned it into a military center of Prussia.

Königsberg (Kaliningrad)

Historic capital of East Prussia, repopulated during his reign by the Protestants expelled from Salzburg. A symbolic seat of the Prussian monarchy.

Wusterhausen (Königs Wusterhausen)

A hunting lodge south of Berlin where the king liked to stay and hold his “Tabakskollegium” (Tobacco Council). The setting of his rustic daily life.

Küstrin (Kostrzyn nad Odrą)

Fortress where Crown Prince Frederick was imprisoned after his attempted escape in 1730, and where Katte was executed.

See also