Ivan Isaakovich Rydkiy was the brother of my great-grandfather Nikolay Isaakovich Rydkin and postal official Mikhail Isaakovich Rydkiy, son of peasant Isaak Rydkiy. He was born in the second half of the 19th century in the village of Korma, Korma volost, Gomel uezd, Mogilev province (now Dobrush district, Gomel region, Belarus).
Service in World War I
During the First World War, Ivan Isaakovich was mobilized into the Imperial Russian Army. He served as a lance corporal (gefreiter) in the 304th Novgorod-Seversky Infantry Regiment (76th Infantry Division). His unit was engaged in major military campaigns on the Eastern Front.
Wounding in Action on September 10, 1915 and Regiment Casualty List
Preserved in the collections of the Russian State Military Historical Archive (RGVIA), in the Special Chancellery for the Collection and Registration of Information on Casualties, is the regimental "List of Lower Ranks of the 304th Novgorod-Seversky Infantry Regiment Killed, Missing in Action, Wounded, and Shell-Shocked between September 3 and September 14, 1915 Inclusive", compiled on October 3, 1915.
According to this military report, on September 10, 1915, during heavy fighting on the front lines, lance corporal Ivan Isaakovich Rydkiy was wounded / shell-shocked and evacuated to the forward dressing station of the 76th Infantry Division for emergency medical aid.
Treatment in the 213th Field Reserve Hospital and Return to Duty
From the divisional dressing station, the wounded soldier was transferred to the 213th Field Reserve Hospital. In the Casualty Bureau Card Index of RGVIA, his original discharge card (No. 1203) is preserved. The document notes that following three weeks of treatment, on October 1, 1915, Ivan Isaakovich was officially discharged and ordered to return "to the active army" to rejoin his regiment on the front lines.

Family and Kinship Connections
Sources and References
- Russian State Military Historical Archive (RGVIA): Fund 16196 (Special Recordkeeping for Registration of Casualties, 1914–1918), Inventory 1, File 496 (Casualty Lists of the 304th Novgorod-Seversky Infantry Regiment), Document No. 254288 ("List of Lower Ranks Killed, Missing, Wounded, and Shell-Shocked in Action between September 3 and September 14, 1915", Oct 3, 1915).
- RGVIA: Casualty Bureau Card Index of World War I (Officers and Soldiers), Box 2959-R (Record No. 1203).
- Ministry of Defense of the Russian Federation Portal "Memory of the Heroes of the Great War 1914–1918": Casualty Report (Wounded Sept 10, 1915, Record ID chelovek_donesenie14048463).
- Ministry of Defense of the Russian Federation Portal "Memory of the Heroes of the Great War 1914–1918": Hospital Discharge Card (Record ID chelovek_gospital21091147).
- Family archive of the Piatnitski and Rydkin families.