L. L. Zamenhof L. L. Zamenhof Ludwik Lejzer Zamenhof (; , ; – ), credited as L. L. Zamenhof and sometimes as the pseudonymous Dr. Esperanto, was a Polish-Jewish ophthalmologist and the creator of Esperanto, the most successful constructed language in the world. He grew up fascinated by the idea of a world without war and believed that this could happen with the help of a new international auxiliary language, which he first developed in 1873 while still in school. Zamenhof was born on 15 December (3 December OS) 1859, the son of Markus Zamenhof (27 January 1837 - 29 November 1907) and
1st Uhlans Regiment of Polish Legions "Stanisław Bończa", Stefan Kulesza "Hanka", Stanisław Skotnicki "Grzmot", Ludwik Skrzyński "Kmicic". In February and March 1917, cavalry courses (officers and non-commissioned officers) and multi-sealed courses appeared in the regiment. On August 10, 1917, the commander of the Polish Legions passed the command of the regiment to captain Albert Kordecki of the 2nd Cavalry Regiment Albertowi Kordeckiemu z 2 Pułku Ułanów. 1st Uhlans Regiment of Polish Legions 1st Uhlans Regiment of Polish Legions was a detachment of the Polish Legions during World War I. Uhlans of this unit were called "Beliniaki", which was taken from the surname of their original leader,