I made this sometime ago, but have moved on to another game series.
You will have to manually install these.
First, I have expanded the Eagles Strike Units file to include the European add on, J Mass style.
This goes into the Eagles Strike Map folder.
In other words it's the same basic J Mass file but expanded, the basic game is unchanged.
Two, I have expanded J Mass four 2D100 ground files to include the missing 2D50 ground files.
These can be used in almost every game.
Also I altered the 2DNormal100 and 2DNormal50 files to better show the different levels, ( this is my opinion, square peg round hole )