What do Reformed Christians understand by God's foreordination?

The reformed, *Westminster Confession of faith*, reads in chapter three : > God from all eternity, did, by the most wise and holy counsel of His > own will, freely, and unchangeably ordain whatsoever comes to pass Does *foreordained* mean God wanted certain historical evils like wars to happen? And that there is nothing *we could have done*, for those events not to happen, since God, *from all eternity*, willed them?