Atacked a planet with 1K troops , planet has 19k troops , becouse of I.W. 2-3K switched to my side , killed 9K so I guess the had to have ~8K troops left but I conqured the planet.
That was 2nd time , 1st time saw the same behaviour but did not recorded numbers.
Btw: another small related thing - I had +1400 in trasury , IW. cost 3000 if I am not mistaken but it still allowed me to use it (making me -1700) .
Is it OK that it allows to purches stuff when you do not have money ?