For my Red Alert Zero Mod.
The Infantry Fighting Pillbox is a start-game defense structure (you can start building them when your Conyard is built) and designed to garrison a single infantry unit and customize its function accordingly.
It uses no power, has no standard weapons, strong armor, but has only a 90 degree field of vision and fire range (the front).
Listed are the infantry units and corresponding functions of the structure;
Marine/Conscript= (machinegun nest)
Guardian = dual missile launchers
Scout = fire-control tower (enhances range and ROF of nearby defenses)
Engineer = slow-repairs nearby structures
Spy = small stealth radius around the pillbox
Dog = Kennel (spawns an uncontrollable guard dog that is constantly replaced when killed)
M-COM = stealth Sonic Turret
Crazy Ivan = plants minefield, throws grenades
Commissar= propaganda radius
The rest of the infantry units simply use enhanced versions of their weapons, and the Pariah and the SkySec Trooper (formerly Air Defender) simply cannot enter.
Nothing fancy about the design- just a nice compact concrete dome with a hatch on the back and a gunner's port on the front, with some sandbags partially wrapped around to further reinforce the front/back view.