Well given the west was the invading army during The Crusades I don't see how you can pin that one on Islam. I'm confident that you'll do so anyway but when you start with the answer thats what you get.
If you could provide me with an example of a religious or political war which was disconnected from land I'd be interested in seeing it. After the infidel is destroyed his land is there for the taking is it not?
I've always thought the war which concerns al-Qaeda was always doomed to failure from their perspective because it was not connected to land. If you can provide me with an example of a successful war which was won and no land was involved I'd be interested in seeing that too.
I'm sure you were given examples in school.