One Finnish Defence Forces crew member was hospitalised while others received minor injuries. File photo of a Finnish Defence Forces' tank. The vehicle in the photo was not involved in the collision. Image: Ville Välimäki / Yle Two tanks collided during a ground forces' training exercise in Pohjankangas near Niinisalo in the southwest of the country on Friday, injuring several people, the Finnish Defence Forces has announced in a statement. The accident occurred when a BMP-2M infantry fighting vehicle collided with a BMP-1TJJ artillery observation vehicle as the two tanks moved on parallel lines in the same direction.