Your narrator usual Sorta, Arch Duke of Austria. In the previous Brexit we were GB but lets face it GB is far too easy, just paddling around building an empire with unlimited resources. So we jumped into the fire.
Morale in the Coalition is high. Why is Austria in the coalition I hear you say? Well discussions were had with the French dictator regarding mutual goals but it soon became clear that the dictator is an overbearing egoist who wants everything. Also he believes that we are constantly conspiring against him, which is untrue. However the little dictator is going to attack Prussia or Austria, that much is clear.
Being unable to deter invasion we joined in the British led coalition. Intelligence pointed to a Prussian invasion being most likely - the dictator had offered us peace for a free hand against Prussia plus some plum Prussian land, which we rejected, The dictator is always generous with other people's land!
After much diplomacy, sometimes at 2 am, a full alliance was agreed, All the parties agred that France would attack us one by one and that now we were strongest. Prussia would expand westwards towards France and Warsaw would be given to Russia.
Eventually it was agreed that for the greater good Warsaw would stay with Prussia. The most important item was stopping France before they gained momentum. Tough negotiations but worthwhile. Austria was saved.