Are there any differences between the movie adaptation and the novel of The Sky Crawlers?


[Wikipedia](https://en.wikipedia.org/wiki/The_Sky_Crawlers_\(film\)) mentions
that the _The Sky Crawlers_ movie is an adaptation of the novel. While the
article tells the story in detail (if not overly detail for Wikipedia), the
[article on the novel](https://en.wikipedia.org/wiki/The_Sky_Crawlers) doesn't
have any summary for each novel.

Does the movie faithfully adapt the novel? Are there any differences between
the movie adaptation and the novel?

