There is no way that is correct.
Fred lost twice as much as 18k in the first battle of the war.
France had a tough time in that war.
The English had about a 100k or so troops in NA that they could hit me with from wherever they wished. We had some brutal battles in Stadcone because of that. Hell. England went to 6 WE before anyone else even joined the war. We were doing a 1v1 for a loooong time.
At the same time, the Dutch were getting their kicks running about 20-30k armies through my territory at a time, or sieging places like Vendee. At the same time, they kept about 100k in Zeeland, forcing me to keep a 90k army there too.
Spain however, was probably the hardest. I had to keep 100k troops on the Iberian border to fight him there, and he kept landing 100k troops in Napoli.
So I was paying like 100d for maintenance.
I was also racking up huge war exhaustion and getting unhappy peasants and colonial uprisings everywhere.
Finally however, I got Villars, and was able to methodically steamroll Netherlands with equal odds. His mighty forts were difficult, and I had to face about 120k troops three times. The first I lost, the last two I won. And after that, his merc pool was empty after the final time.
I was also able to finally stabalize my border with Spain after I caught him for the last time with a drastic cavalry advantage. Though, due to his naval superiority, I had to keep 100k in Italy and 100k on the Spanish Marches thereafter. And he kept landing troops there until the end of the war. It ended with him still holding Apulia.
I was so strapped for support, that I had to take the assault on the Netherlands very slowly. I'd lose 50k men...Fall back, recruit 50k more, and do it again. Succeed and lose 50k more. Wait and recruit 50k more...etc.
In the end, I lost Isle Royal to England, grabbed Flandern off the Dutch and fought to a WP with Spain.
Fred, Cicero and Dan all fought very well. It was a very stressful war for me.