Frankenstein's Army (2013) on Netflix

During the World War II, a Russian troop in Germany receives a distress call in the radio from a group of Russian soldiers under siege by the Germans with the respective coordinates. The leader Sergeant Novikov decides to seek out the soldiers through the countryside of Germany. The soldier Dimitri is filming the troop to make a documentary and while they walk, they find weird bodies, slaughtered nuns in a convent burnt to the ground and open graves in a cemetery. They arrive at a deserted church where they meet a lethal army of undead with implanted weapons and tools. Soon they learn that the deranged but brilliant grandson of Dr. Viktor Frankenstein with the same name has a secret laboratory in the church and is responsible for those monstrosities. Further, they discover that their troop has been secretly assigned by the government to find and kill or bring the mad scientist to Moscow.