June 27, 1941. A Finnish Army car drives along a dirt road, a few miles from the border with the Soviet Union. Above the vehicle, a line of pines hangs in the air. It looks like an old-school photographic trick, or a surreal painting by a disciple of René Magritte, or a Photoshop clone stamp. But on the side of the road, unseen, stands a young and ambitious photographer named Osvald Hedenström, and there’s no trickery. Hedenström, who turned 28 that same day, was embedded with the Finnish Army fighting…