Red Alert 2 MAP DLC from Westwood
There are a ton of cool maps that nobody plays because they can only be downloaded directly, not shared ingame Here's how to install them.
First, start out by downloading all of the maps here in this .zip file.
Second, unzip the file into your Red Alert 2 directory.
It's probably one of these:
C:\Program Files\EA Games\Command & Conquer The First Decade\Command & Conquer Red Alert(tm) II\RA2
C:\Program Files (x86)\EA Games\Command & Conquer The First Decade\Command & Conquer Red Alert(tm) II\RA2
You can also right click on your shortcut to Red Alert 2 and select "find target." It will take you directly to your install folder.