That's a good point and it's easy to find fault with them now. However, it's the Chamberlains of today that bother me. They think that, despite history, war can be avoided with appeasement. Hence, Jimmy Carter meets with Hamas and people are calling for a "dialog" with Iran. Mindless peace activists that prolong suffering.
You just want to grab them by the collar and explain, "There will always be war, there will always be strife. We're the good guys. Get used to it!"