Yes
Romania was an ally of Germany.Romania was an ally of Germany.
The Austro/Hungarian Empire was Germany's ally in WW1
In the WW2 Romania was an ally of Germany between 22.06.1941 and 23.08.1944.
Austria-Hungary was not a particularly useful ally from Germany's point of view.
Germany
Yes
Germany
Japan
Axis
Japan is gaining very little after WW I China in civil war, encourages Japan to invade Left League of Nations Ally with Germany Invade China (not part of WW2) And then declaring war on the world with Germany and Italy
Germany's ally had spotted the enemy.
Japan was in the allies. Japan joined the allies because Germany had a part of china and a few islands in the pacific and Japan wanted to conquer the german land.