How Can One Create Game Balance Axis and Allies WWI?
The standard way to create balance in Axis &amp; Allies is to use secret bidding. For example, bid an amount of money that Germany would get extra at the start of the first round of the game (the one bidding lowest gets to play Germany).

For example, two players bid in secret.  Player A bids 20 and player B bids 25.  This means Player A gets to play the Axis and that Germany gets an additional 20 IPC the first round.  The rest of the game unfolds as normal and Germany does not get additional money in later rounds.

The upside with this bidding is that nobody can complain that the game was not balanced any longer (if they thought differently they should have bid differently).