page_title: Kazimierz Siemienowicz
hierarchical_section_title: Kazimierz Siemienowicz
caption_attribution_description: Беларуская (тарашкевіца)‎: Уяўны партрэт Казімера Семяновіча (Kazimier Siemianovič) English: Kazimierz Siemienowicz Lietuvių: Kazimieras Simonavičius
context_page_description: Kazimierz Siemienowicz was a general of artillery, gunsmith, military engineer, and one of pioneers of rocketry. Born in the Raseiniai region of the Grand Duchy of Lithuania, he served in the armies of the Polish–Lithuanian Commonwealth and of Frederick Henry, Prince of Orange, a ruler of the Netherlands. No portrait or detailed biography of him has survived and much of his life is a subject of dispute.
  After contributing his expertise to several battles, Siemienowicz published Artis Magnae Artilleriae in 1650. This treatise, which discusses rocketry and pyrotechnics, remained a standard work in those fields for two centuries.
context_section_description: Kazimierz Siemienowicz (Latin: Casimirus Siemienowicz, Lithuanian: Kazimieras Simonavičius, Belarusian: Казімір Семяновіч, romanized: Kazimir Siemianovič; born c. 1600 – c. 1651) was a general of artillery, gunsmith, military engineer, and one of pioneers of rocketry. Born in the Raseiniai region of the Grand Duchy of Lithuania, he served in the armies of the Polish–Lithuanian Commonwealth and of Frederick Henry, Prince of Orange, a ruler of the Netherlands. No portrait or detailed biography of him has survived and much of his life is a subject of dispute.
  After contributing his expertise to several battles, Siemienowicz published Artis Magnae Artilleriae in 1650. This treatise, which discusses rocketry and pyrotechnics, remained a standard work in those fields for two centuries.
caption: Kazimierz Siemienowicz. Modern artist impression from a Belarusian stamp.
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