The official 1.7d version of 1939-1945 Second Great War mod for RON Thrones and Patriots expansion pack is available here:
The Steam version for RON Extended Edition is available subscibing the mod here:
The CTW versions of the mod will let you play campaigns and use the editor to create scenarios with mod features (units, buildings, etc.).
There are two CTW versions, one for RON TaP and one for RON EE.
This because the data files are in different folders and you have to select the right one for your RON version.
The CTW for RON Thrones and Patriots expansion pack is available here:
The CTW for RON Extended Edition is available here:
These versions will overwrite your game core files. Make a backup copy of the Whole "Rise of Nations" directory before to install it.