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

===Army Composition===

As far as HQs go, it's Jacobus or Celestine. You can pick Canoness, but I'd recommend focusing on the special characters, as they're your bread and butter. Canoness can serve her purpose as providing wound tanking support, using her leadership for AoFs or using her BS for Quad-guns, but Jacobus and Celestine bring so much to the table with their special abilities you'll miss out much if you don't get them.

For your basic troops, two groups of Basic Bolter Babes with flamers and heavy flamers is a good start, although you shouldn't be afraid to customize their wargear to your needs. Your basic Sisters gaining Preferred Enemy is damn nice, especially with those flamers. Seeing as how its an AoF you have to pass a leadership test for it to work, so upgrading a superior offers reliability with the increased LD. Not required, of course, but far more justifiable than, say, upgrading to a veteran sergeant in a DA army. I would also recommend taking a Simulacrum, because it means you can now get preferred enemy twice (!). There are a variety of sizes in which you can run your troops, and honestly, I think all have their uses. A shitton of immolator spam with 6 man squads could be hilarious, but with special weapons, Simulacrums and vets, that will get real expensive real quick. Remember, Sisters don't benefit from nice things like ATSKNF which means that if they run, you're fucked. (Don't forget the cheap-ass Book of St. Lucius and Jacobus's bubble of Fearless, though.) Eventually, you can build your army to a rhinospam (10-man groups inside each with few special weapons and priests?) or try out a blob of sisters (20-man footsloggers), if you're feeling particularly manly.

Elites? Not the best part of your codex, you might want to stay light on these choices at first. Celestians? They can work with very aggressive playstyle, but as said, you need to devote yourself to them. Give them a try first by proxying, then decide if you want to get more. Repentia are the other option. They could potentially pop tanks, but if that's what you need scroll down to Fast Attack. Their best use is as a suicide unit pointed directly at your opponent's dedicated close combat squad. As much as I love the Repentia in theory, in practice they have serious problems. Striking at I1 (instead of 3) is not such a big deal, since generally Sisters go last anyway, but losing the ability to strike even when dead is a definite kick in the giblets. A 3+ FNP only goes so far (T3). If you point them at terminators, good on ya, because generally those terminators will strike simultaneously (unless they are Chaos and equipped with power maces, then you are fucked. So long FNP) and the end of that combat will be a wonderful hot mess with you coming out on top insofar as his 200+ point squad just got reamed by your 155 pt masochists. But if you point them at a blob squad of orks, or chaos marines, or hormagaunts, or hell, even blob squads of imperial guardsmen/cultists, well... Point being: these girls absolutely have their uses, but be VERY careful HOW you use them. No matter what, take a priest with them (War Hymns, Zealot). If you're using Imperium allies (and why wouldn't you), mounting your Repentia in a Land Raider, Stormraven or Storm Wolf will let them get to the fight in style and safety. One more thing to note: don't COMPLETELY neglect these ladies. Their apocalypse formation (and seeing as how its war in the 41st millennium. EVERYONE should be playing an apocalypse game or two) is actually pretty cool, especially when combined with the proper strategic asset (like, say, I don't know, preventing the opposing army from shooting at them for a turn [i.e. shield-generator]?).   

When it comes to Fast Attack, you'll want one squad of Seraphim, with two Hand Flamers and Melta Bombs on your Sister Superior. Pop tanks, shred infantry, nuff said about that. Dominions work amazingly when spammed with Melta and put in an Immolator with T/L Multi-Melta. Take 2. Ignoring cover is '''extremely useful''', so feel season the taste with Simulacrum and superiors for better LD's. Throw in a Laud Hailer, which is mathematically more likely to let you pass your AoF test than the same points spent on a Veteran Superior - but hell, take both if you can afford it. Why? Ever fought Eldar Serpent spam? All sorts of GW cheesiness has been slathered on those stupid tanks, and you need to be able to ignore their cover to take them out. Necrons, Dark Eldar and Tau can do similar cover-based shenanigans - all their tanks (save the Monolith) can Jink. It's also indispensable against Tyranids, when you really must bust that Exocrine sitting in a ruin with a Malanthrope before it blasts all your Bolter Babes to Betelgeuse. Granted, your opponent will generally only have a 30% chance to save, but if he happens to make that save on his Leman Russ Demolisher, you're going to be really butt-hurt you didn't spend the points to assure your passing your AoF. 

Now you're at Heavy Support and if you're not taking at least one Exorcist, at any points level, punch yourself in the face. At 1500 points you want two (if not three) with Laud Hailers, along with some Retributors loaded up with Heavy Bolters, a Veteran Sister Superior, and an Simulacrum Imperialis. Sit the three behind an Aegis Defense Line with a Quad Gun, you'll have two chances at Rending at Ld9 with a reroll. Don't argue, do it. Alternatively, if you want to play aggressively with the Sisters, equipping Retributors with Heavy Flamers and sticking them in a Rhino makes delicious, mobile, Rending flamers that purge heretics like butter. You can safely skip the Penitent Engines, unless you want to show off one on your display shelf. If you like Forge World, save room for the Avenger - it's hell on wings against flyers, medium tanks and pretty much any infantry without a 2+ save (and with those lascannons, it's a threat to them, too). Let your Dominions focus on the Land Raiders and Monoliths, let the Avenger turn everything else into so much metal confetti.