Thorwick:
Hello, I was wondering to have a successful Chaos Dwarf army do you have to include orcs,becuase I don’t really want to get the OG book just for two units.
P.S. If this thread would suit tactics or army lists thread could someone please move it.
Kered:
Yes you can field a perfectly good army with just Chaos Dwarfs and Hobgoblins or even just Chaos Dwarfs. But if it’s just having to by the rule book that you don’t want to do you can find stats and FAQs here http://www.chaos-dwarfs.com/wiki/index.php/Chaos_Dwarf_Resources#Orcs_.26_Goblins
Thommy H:
Also, the full animosity rules are in the Orcs and Goblins book so, technically, even if you’re just fielding Hobgoblins you really need to get it.
Thorwick:
But in the CD RH rules it says they only bicker, it doesn’t say they WAAAGH.
Kered:
GW had an update stating the changes to orcs and green skin in Chaos Dwarf armies such as big and arrow boy it also says that hobgoblins follow the rules for animosity the same as orc and goblins. Sadly I can’t find the link to it.
Time of Madness:
Well there’s more then two unit choices for orcs. You have black orcs, orcs, goblins, hobgoblins, wolf riders, bolt throwers, sneaky gits.
The problem with taking orcs is it takes up some valuable special slots. Many people like to fill up on death rockets/bolt throwers etc. The most used unit take is generally black orcs as they don’t suffer from animosity.
The long and short of it is, you don’t need the orc and goblin book to play chaos dwarfs. Heck you can even create a non greenskin army and focus just on chaos dwarfs.
Time of Madness
Ronshank:
Well if you use the Unoffical rules then you have the problem of buying the chaos book just for the Hellcannon at $50 a pop I feel your pain. Cheat ask a friend who has the book to photocopy just the anomosity etc pages you need, of course if you need it alot you may have to fork out. You can use just the Chaos Dwarfs, Bull Centaurs etc and depending on your war style you can be quite successful with only them. Check the gaming threads I remember seeing some successful armies on there which did not use any greenskins. It definately can be done
Hashut’s Blessing:
Actually, bolt throwers, sneaky gits and hobgoblins are in the RH list. However, as has been mentioned, if you have any hobgoblins, sneaky gits or units from the Orcs & Goblins army book, you will need to buy it (because of the Animosity chart or stats in the case of the units in there).
I would recommend buying it regardless as it opens up more options in a fairly limited number of choices. Cutting down to non-greenskins leaves you with characters, Chaos Dwarf Warriors, 3 war machines and the bull centaurs… I like to take Orcs as a cheap and resilient fodder unit, or Orc Arrer Boyz for their Toughness, Choppa and the fact that they are as good at shooting as hobbos. Black orcs are often taken by players and can be a nice addition too.
Long story short: if you select the correct units, you won’t need the book, but my verdict is that it is a worthwhile addition.
Bassman:
Yes, you can play without greenskins but… if so where is the fun? 
I like them, it’s so funny to see them dying for you… lol more if you are palying against Orc and goblins. It’s so hard for them to see their kindred enslaved and sent to die for the hatred dwarfs.
Game wise I like to field a regiment of 20 orcs with double choppas and full command. They are 190 points well spent and they are funny to be played.
At the moment I’m converting some Black orcs. Gamewise and modelwise greenskins are some of the funniest troops in the game! 
Willmark:
You don’t have to field orcs but black orcs are one of our better infantry options and near elite in some ways or as near as we get for elite infantry.
Goblns = no need for a CD army as hobgoblins are a better choice.
Hashut’s Blessing:
The main advantage that hobgoblins get over “Common” goblins is that they don’t take up a special slot. Goblins are pretty obsolete in a CD army, but Orcs, Orc Arrer Boyz and Big 'Uns are viable, Black Orcs are a good choice and to use hobgoblins (whether on wolves or not) you’d need the book.
Think of it this way: You’re getting two army lists for the price of one 
starscream:
Last game I had was Vs a dwarf gunline and I took a unit of 15 Black Orcs who were fantastic, they attracted loads of attention that by the time they finally dies (which took a while - they are quite resiliant) my CD warriors and Blunderbusses had closed the distance …click click BOOM!
Willmark:
Yep people seem to spend an inordinate amount of effort trying to take out Black Orcs.
Tarrakk Blackhand:
I find that the Black Orcs didn’t help me too much other than being the “Large Target”. However, I can see advantages to adding in the Orc Boys and Arrer Boys.
Even if you don’t plan on using the second book now, I would keep it in mind for the future. Also, if you attend any gaming events and they don’t allow you to field Chaos Dwarfs, you could field your army as either Orcs and Goblins or Dwarfs if you have the two books.
Anonymouse:
Doesn’t the GW-website give stats on O&G-core units? And there’s always the Mordheim Orc-Warband, where the Animosity-rule is explained, isn’t there?
But using orcs/goblins for fluff-reasons or meat-shields adds a bit of flavour, methinks.
Thommy H:
The Mordheim version of Animosity is neither the same as the current version in the Orcs and Goblins book, nor is it remotely compatible with the Warhammer rules.
Hashut’s Blessing:
Anonymouse: The costs aren’t listed, neither are the options. Also, the animosity rules ( as Thommy H said) are completely different and incompatible.
Anonymouse:
D’oh! That’s what I get for thinking without checking 
Hashut’s Blessing:
Not a problem: you still need the Ocrs and Goblins book to actually use the Hobgoblins and Sneaky Gits anyhow because of Animosity 