Looking for Military horror games, preferably with NPC allies

Lite-horror is fine, co-op games a okay, although I'd prefer they be singleplayer. Some examples:

Quake 4: Probably the best example I can think of, large-scale military operations, horror undertones in most levels, but the player is frequently accompanied by NPC allies

Resistance 1 and 2: Also great for the same reasons as Quake 4

S.T.A.L.K.E.R: Playing the anomaly mod gives options to join factions and recruit members into your squad

SCP 5k: Great tactical gunplay and atmosphere, no NPC allies is unfortunate but the coop is fun

Aliens Dark Descent: Throwing this in as an example beyond the fps genre that has everything I'm looking for. Squad of marines, tense and stressful levels that fill you with dread, all from a top down perspective