Most people did so I wouldn't beat yourself up too much. I was the one dipshit in my school who wasn't all "Lets go kill em all!!!" and thought the invasion was a really stupid idea. Not because I was a good person or a leftist mind you, but because I was a big enough history nerd and war buff to know it was a really terrible choice for imperial expansion; there were so many better non while people to invade and kill.