Here is the updated description for EAW. For CW2, the manual writer was too late to update it.
Play by Email (PBEM)
EAW can be played against one or two humans opponents using
PBEM or any other valid file transfer protocol, such as Instant
Messaging or Dropbox™ . One of the players (the “Host”

will have
to initiate the game. The procedure is detailed below:
1. Create a game:
The Hosting player chooses a Campaign/Scenario and a side and
starts the game as usual. This automatically generates a sub-folder
To End All Wars Game Manual
11
in the <User Directory>\EAW\Saves\ directory, named after the
Campaign or Scenario selected (1914 Campaign if you play the “1914
Campaign” scenario, for example). Please note that a number helps
differentiate between multiple instances of the same Campaign/
Scenario. However, the best way to avoid confusion is to rename the
in-game files with the appropriate button in the Load Game Window
(e.g. 1914 Campaign John vs. Joe). Do NOT rename any EAW files
externally to the game.
If you have trouble finding your User Directory, you can look at
the Options window, in the main menu, it will be indicated there.
In this newly created folder you will a single HST file, containing
all game data.
2. Host sends the HST file to opponent:
The Hosting player now sends his opponent the HST file. The
opponent must store this file in a folder of his choice within
<User Directory>\EAW\Saves\. It is advisable to use a specific
subfolder per game, for example <User Directory>\EAW\Saves\
JohnVsJoe subfolder.
Note: In order to avoid possible data corruption if transferred by
E-mail, it is strongly advised to E-Mail using some type of compressed
format such as ZIP or RAR.
3. Non-Host sends ORD file to Host:
Each player now loads the game and gives his orders for the upcoming
turn. When ready, each player saves the game. This will generate an
ORD file (in the folders mentioned above). Important: do not click
on End Turn at this step.
The Non-Hosting player then sends his ORD file to the
Hosting player.
To End All Wars Game Manual
12
4. Host resolves turn
The Hosting player saves the ORD file received from his opponent
into the appropriate directory (there should be one HST file and
then one ORD file per active player) and loads the game again (or
if he is not playing, he loads a turn from any player). He now clicks
on End Turn to launch the turn resolution, where all orders are then
executed. A new turn is now ready to start. Go back to step # 2 and
repeat.
Note: The Non-Hosting player doesn’t get by default a “play back”
of his opponent’s turn. However, he can check the turn’s Message Log
to see what has occurred during the turn, including battle reports.
There is an unofficial playback support though, that can be activated
in-game. Please refer to the EAW forum at Ageod on this topic.