
King of Prussia
"A crown is merely a hat that lets the rain in."
The 28-year-old Frederick seized Silesia within weeks of Emperor Charles VI's death — an act of naked opportunism he later described as following ambition, youthfulness, and a desire to make my name. His tactical genius developed across Mollwitz, Chotusitz, Hohenfriedberg, and Soor, transforming early embarrassments into a military legend. The war made Prussia a great power, and Frederick its defining monarch. He ruled for another 46 years, becoming the model of the enlightened despot — a philosopher king who corresponded with Voltaire while drilling his infantry to a mechanical perfection no other army could match.
Did you know?
Frederick played the flute with genuine virtuosity and composed over 100 sonatas; he corresponded with Voltaire and considered himself a French philosophe first and a Prussian king second
April 10, 1741 · 9,000 total casualties
Mollwitz proved the Prussian infantry's drill and discipline could win battles even when cavalry collapsed. It also revealed Frederick's early weakness as a tactician, a lesson he absorbed and never forgot. The victory kept the Silesian campaign alive.
May 17, 1742 · 12,000 total casualties
Chotusitz forced Austria to sign the Treaty of Breslau, ceding Silesia — one of the wealthiest Habsburg provinces — to Prussia. It ended the First Silesian War and established Frederick as a serious commander.
June 4, 1745 · 15,000 total casualties
Hohenfriedberg is widely considered Frederick's masterpiece of offensive surprise. Executed flawlessly before the enemy could react, it demonstrated the decisive potential of speed, discipline, and night marching that would define Frederician warfare. Austria lost 9,000 prisoners alone.
September 30, 1745 · 10,000 total casualties
Soor demonstrated that Frederick could win even when surprised — a personal reputation milestone as important as any tactical lesson. His ability to read a collapsing situation and improvise was on full display. Combined with Hohenfriedberg, it ended any Austrian hope of retaking Silesia by force.
December 15, 1745 · 11,000 total casualties
Kesselsdorf effectively ended the Second Silesian War. Dresden's capture forced Austria and Saxony to the negotiating table, producing the Treaty of Dresden that confirmed Silesia as Prussian territory and ended Prussian participation in the wider war.
January 24, 1712
🌅 Birth
Born in Berlin, eldest surviving son of Frederick William I
1730
📍 Posting
Attempted to flee to England; arrested; forced to watch his friend Hans Hermann von Katte beheaded
1736–1740
📚 Education
Crown Prince at Rheinsberg Palace; writes Anti-Machiavel, courts Voltaire
May 31, 1740
📍 Posting
Becomes King of Prussia on death of Frederick William I
April 10, 1741
⚔️ Battle
Battle of Mollwitz — his first battle; infantry wins despite Frederick's flight
June 4, 1745
⚔️ Battle
Battle of Hohenfriedberg — pre-dawn masterpiece, his finest tactical hour
August 17, 1786
✝️ Death
Dies at Sanssouci Palace, Potsdam, after 46 years on the throne