A Russian missile strike on a Ukrainian training ground killed three soldiers and injured 18 deep behind the front line.

Russian forces struck a Ukrainian military training facility on July 29, killing three soldiers and wounding 18. The missile attack targeted one of the Ground Forces’ training units in the evening, though the exact location remains undisclosed.

It is the third Russian attack on a Ukrainian training unit in little more than two months. An Iskander missile attack on a camp in the norther border region of Sumy killed six servicemen in May and another strike killed 12 people and wounded another 60 last month.