I was taking into account the time it takes raising an army as well and shipping it from afar [iirc it takes ~11 months to ship from western Europe to Australia with no canal].
Of course, if the enemy is much closer to then the modifier** should be shorter [distance dependent?].
**and if they are not helping they'll receive a negative modifier with their ally; namely the -50 "R U KIDDING ME?!" modifier![]()
You can make a case that nations that are across the world (such as Australia) joining hands in war to ship their forces there is awkward anyway. I've always found it odd that the Iberian butt buddies will help each other in offensive wars in Africa or Mesoamerica, or that say Portugal can find a purely European ally and bring them into a defensive war against Mali despite that said ally has almost no navy, can't see Africa, and/or is landlocked etc. The game (erroneously) uses "can't reach target" in other places, so there are other mechanics that at least attempt to realize the potential for non-contributors. That could use some expanding.
But IMO this whole shebang is a secondary issue to the "bleeding nation commits suicide" behavior of the AI.
- 1