Dimǎncescu took YMCA courses in Romania (1920–1921) and became a ski instructor in the 1st Mountain Troops Battalion in Sinaia.
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In 1919 he was a member of the Romanian rugby team at the Inter-Allied Games in Paris.
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In August 1917 he participated in the battles of Cosna / Hill 789 and Oituz-Grozești / Hill 383.
Ioan Sturdza | Alexandru Ioan Cuza | Ioan Sabău | Mihai Ioan Botez | Ioan Vancea | Ioan T. Morar | Ioan Tănăsescu | Ioan Silviu Suciu | Ioan Ploscaru | Ioan Miclescu-Prăjescu |