I don’t like this sort of a statement. It sounds to much like there is only black and white, right or wrong, you’re with us or you’re against us.
It’s not that easy.
So who were you at war with? Iraq? Iran? Afganistan? Pakistan? Saudi Arabia? Terrorism has very little to do with a war as we knew it. That’s why it’s very difficult to learn from history as you suggest. And that’s why war-tactics help very little.
Let’s try to figure out the reasons for the hostility and see whether we can something about them.