The Seventh Sister

Many reincarnated people (popadantsy) know the world they’re entering quite well. But imagine this: after an explosion, a recon patrol from the Red Army ends up… where? In Hell… or just in another world?
Can they repel the invasion of an occupying army? Can they handle the dark priestesses? Will their weapons prove effective? Will their knowledge help them? Or will they have to live by the rules of their new world?

Any coincidence of names, titles, appearance, or character traits with real people should be considered pure chance.