Zone Troopers (1985) on Netflix

When their platoon is attacked only The Sarge, Joey, Mittens, Dolan remain. When they're lost behind enemy lines, Joey thinks he's seen alien in the clear blue moonlight. The next morning, Joey has been unable to convince his friends of what he saw. Mittens and Dolan (thinking the creature was actually a deer) go on a hunt to find food, but they find a seemingly abandoned Nazi camp containing images and studies of a mysterious space craft in the deep forest, sadly they're captured before warning the others. As this happens, The Sarge and Joey discover the UFO themselves along with an alien creature following their every move. Is this alien friend or foe?