This is something i found on one of my very old PC's... sadly i couldn't find the installer for this version :(
so it's called "Company of Heroes Pre-Release Single-Player Beta" but this one is totally different from the Demo Version that was released on one of these Demo discs long ago.

so how to install it? it's pretty simple.
i believe u need these following files to get it running

1. DirectX 9.0c Jun2010
2. DotNetFx35
3. dotNetFx40
4. vcredist_x64 and vcredist_x86

System requirements

3,0GHz Intel Pentium 4 or AMD Athlon XP
Nvidia 6600 128MB or ATI/AMD Radeon X800
1GB Ram

there might be an issue when starting it up like the game might alt-tab everytime you try starting it. This is what u can do to fix that.
when you start the game the first time your pc will automatically create a config/save folder for the game that will be located in C:\Users\User\Documents\my games
Inside that folder you will see "Company of Heroes Pre-Release Single-Player Beta" open it, and you will see a file called "configuration.lua" open it with "Notepad" and try input these settings.

{
		setting = "window",
		value = 1,
		valueType = 1,
	},

after you edit just save the file and try start the game again.
The game has a few errors, but it can be played