the ai will destroy you on hard, on normal it gets some significant advantages, on easy its the same as playing a human and I DEFIANTLY recommend play on easy.
The game has some important structure or principles in place... namely unit integrity, keeping your separate regiment from the same division together, and command and control, keeping the hq for a force of divisions close to them....
asking questions as well.. I am an old time "AT", player, the game this is based on, and still I needed to read the " AAR" to learn how the scenarios play
So, if you cannot play pbem, this plays fine... and has small to huge scenarios.... lots of replay
and if you want to play pbem there are some players... not a robust amount but some...