Complex sentence: Many soldiers froze to death without proper clothing or supply; one Finnish soldier said he saw Soviet soldiers in a frozen campsite and had to poke one in the eye with a stick to see if he was really dead.
Split into simpler sentences: Many soldiers froze to death without proper clothing or supply. One Finnish soldier said he saw Soviet soldiers in a frozen campsite and had to poke one in the eye with a stick to see if he was really dead.