Выпуск 1097. Три ребенка одного военного?

Upon receiving her passport, a resident of the Moscow region was surprised to learn that her father was not at all who she thought he was. A resident of Chita heard from his grandmother that he was not Mikhailovich, but Evgenievich. And a native of Germany found a photo of her father with an unknown child in her arms.
Who are all these people to each other?