September 18 in #Russia: 1739 – The Treaty of Belgrade is concluded between the #Russian and Ottoman Empires. 1788 – The siege of Khotyn by Russian and Austrian forces begins. 1852 – The first publication in print of 24-year-old Leo Tolstoy (the novella "Childhood," in the journal "The Contemporary," No. 9). 1918 – The #Odessa National Polytechnic University is founded. 1925 – The first law "On Mandatory Military Service" in Soviet history is adopted.