Been at war with another country. We made peace. I checked none of my units have fire status set to Aggressive. Come back 10 minutes later - some of my units have opened fire so war broken out. I have made peace three times in the last few hours - but 10/15 minutes later war breaks out with the journal saying it is my army opening fire. I have set what few armies I have to only fire if fired upon and yet it happened again.