This property defines the tech model as WW2V3.
It causes the following behaviors:
- Tech Tokens are used and are carried over from turn to turn
- Jet Fighters gain +1 in attack and defense
- WW2V3 - Used in conjunction to define tech behavior
XML format is:
- <property name="WW2V3 Tech Model" value="true" editable="false">
default value is false