OZERA, Ukraine (AP) — Tetiana Boikiv watched from the doorway of the cellar as the Russian soldiers questioned the man she called her big, big love. They took him away, and she never saw him again.

While it is the atrocities in the nearby town of Bucha that have captured the world’s attention, they are part of a trail of violence that spread far and wide, often under the radar of prosecutors, to ordinary villages like Boikiv's, a half-hour north. Much of the violence was systemic, not random, conceived and implemented within the command structures of the Russian military, an investigation by The Associated Press and the PBS series Frontline found.

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