I'm the gamemaster for a diplomacy game played between a couple of friends, and we encountered a situation where we didn't really agree. I've looked through the rules and searched the internet, but I still couldn't find an answer.
What happens if two forces of unequal strength attack the same province? The rulebook clarifies that an underpowered unit in such a situation has to make a retreat move, but it doesn't seem to mention what happens if there is no defending unit, only attacking units.
To clarify the situation I'll give you an example:
Germany:
- A War - Gal
- A Sil S A War - Gal
Russia:
- A Boh - Gal
Here we see that Germany's attacking force is stronger than Russia's, and there are 2 possibilities (I think) of what happens next arises. Either the unit in Bohemia stays in Bohemia and the unit in Warsaw moves to Galicia, or the unit in Bohemia has moves to Galicia where it then has to make a retreat move and the unit from Warsaw stays in Galicia.
Is there any rule that I have overlooked which answers my question, or do you have any opinions of what might be the proper way to handle the situation?