Allied Unit Outline
The Allied Unit Outline presents details, such as build costs, special abilities, relative effectiveness, and keyboard shortcuts for the units and facilities available to the Allied player.
Axis Unit Outline
The same idea as above, this is the Axis Unit Outline.
Other Web Sites
The place to go if you are looking for the official scoop on this game. This game has a demo available, which includes the game's tutorials, a couple of missions from the campaign, and full access to the game's single player skirmish maps, allowing you play both Allied and German sides.
There's a lot to be found on this site. The "Strategies" section, for example, includes a number of guides, ranging from unit overviews to specific unit strategies. However, the hallmark of this site is its collection of replays from multiplayer matches. Some of the game's top ranked players have contributed replays of their contests. [Note: Replays will only work on a computer running the same patched version of the game that the original recording was made under.]
LoneEagle013's Single Player Campaign Walkthrough (from db.gamefaqs.com)
This is an outline of the basic steps that you can take to master the game's campaign missions. Presented in a simple text fashion.
Game Pressure's Campaign Walkthrough
The highlight of this site's COH section appears to be its campaign walkthrough. This one is illustrated with maps and screenshots.
Company of Heroes Super Guide (from mycheats.com)
A collection of guides and tips with the aim of making you a better player. (Some of this material is borrowed from the Game Replays Forums.)
RTS Game Junkie's COH Category
You'll find another fan's collection of guides and tips for this game, here.
COH Console Commands (from Planet COH)
Just what it says, a list of console commands. If you find keeping up with the computer's AI difficult, when fighting on multiple fronts across the breadth of a large skirmish map, there's an option to slow down the game's speed, which makes for an interesting twist on "real time" strategy game play.
Exhaustive Listing of the Game's Hotkeys (from Game Replays Forums)
Although the back of the manual includes a brief listing of the game's hotkeys, there are many more. This thread attempts to pull them all together. If you are really serious about relying on your keyboard to play this game, you might want to see this page on modifying the game's default hotkeys, as well.
COH Hardware Performance Guide (from Gamespot)
The game comes with a built in benchmarking utility; so, Gamespot took advantage of this to delve into the interaction between different kinds of computer hardware and the various audio and video options that the game's menu offers.
Detailed Unit Specifications (from Planet COH)
This Unit Guide analyses the different units at the level of the game's configuration files. Things like hit points, build times, weapon ranges, and such can be found here.
Another Detailed Unit Specification Guide (from db.gamefaqs.com)
The information looks similar to what is in the previously mentioned unit guide, but the format is a bit different, as this is a straight text presentation (as in notepad).