I'm in 1721 as UP on M/M, I took trade rights and an alliance with both Hannover and Westphalia .

Westphalia has got a surplus of troops and I own Flanders. What have they done, well, after France declared war, they have sent the equivalent of a full stack in three armies to sites in and around Flanders, the port there and my own port in Amsterdam. Effectively supporting me in any attempt by the French to take the provinces.

Westphalia took the province to their south east from the French. In response the French decided to attack the province to their north east. I realised they were in trouble, but due to the level of help they had given me I could march my Flanders army to their aid and spanked the French.

Not bad at all.