Now this is one bug I hope isn't present on the game server
What happened: I declared on Kadin in the test server, ground attacked him, killing a hundred thousand soldiers along with one barrack, and when I checked his nation page, he only lost 3000 soldiers from that barrack. The hundred thousand soldiers that died earlier actually didn't die at all.
War: http://test.politicsandwar.com/nation/war/timeline/war=65411
At the time of writing Kadin has 64 barracks (used to be 65), and he's active 12 hours ago. He also have 192,000 soldiers
As you can see it's just a minute after I supposedly knocked 135k soldiers off him. Even if he's present he can only create 64k soldiers in one go. Before the war he had 195k soldiers.