Editing Warhammer 40,000/7th Edition Tactics/Fortifications (section)

===Battlements & Battlefield ===
You can only take one, so choose wisely.
*'''Ammunition dump''' Re rolls 1's to hit this is a great upgrade in combination with units that like to use overheating weapons, but even without overheating weapons, it adds a sizable chunk of firepower to the squad holding it. Also remember that models with BS 5+ still get to use their full BS on a reroll.
*'''Comms Relays''' Cheap upgrade that modifies reserve rolls, these are a must for each army that relies heavily on their reserves such as flyer heavy army or drop pod one.
*'''Gun Emplacement With Quad-Gun''' - Nice little piece of anti-air. Being twin-linked and packing a lot of dakka, it can overcome the BS2 of being unmanned, if you don't want to waste the shooting of an entire squad holding it. '''Thanks to RAW, models using Interceptor to fire this and the Icarus during your opponent's phase can still use their own guns to shoot in your phase, enjoy the fun.'''
*'''Gun Emplacement With Icarus Lascannon''' - cheaper, punchier and longer ranged cousin of a quad gun, it suffers from being one-shot and non-twinlinked. Unless you are absolutely certain there will be flyers with AV13 (!!!), it generally should be avoided.
** A single penetrating hit with +1 for AP2 can cripple a flier rather than plinking away at hull points. However with the <s>lack</s> (the moment you think about "lack" of them the [[Caestus Assault Ram]] will punish you) ''rarity'' of AV13+ flyers in the game, stats says that 4 TL S7 shots are always superior to 1 S9 shot, pretty much regardless of user BS or hull points lost per points spent. On the other hand, monsters with 3+ and T6/7 will laugh at Quadgun, while Icarus at least can make them jink.