Ground rules are detailed standards set by the military to protect American forces in a particular war or theater.
I'd put it as five to one, for this particular war.
Which meant that this particular war might very well end this day.
More narrowly, it refers two particular wars between 1600 and 1629.
I don't really know enough to argue for or against these particular wars.
"I'd like to get my hands on whoever thought up that particular war."
It's just this particular war I don't believe in.
As it happened, I saw no more of that particular war.
"I wouldn't be surprised if that particular cold war gets real hot real soon."
This is not a satisfactory explanation, of course; that particular war was going on long before 1965.