 Three of his brothers opted for service in the Reichswehr; his brother Paul died in service at Rechlin on 29 June 1929.Gert Jeschonnek served 34 years as a naval officer.From 1905 until April 1908, Jeschonnek attended the "Bürgerschule" (citizen school) in Bromberg, present-day Bydgoszcz, and then for one year the local "Gymnasium".