This collects Issues 9-12 of Sub-mariner as we get into the thick of the War. Sub-mariner creator Bill Everett is long-gone from the book, so this book is a bit below the standards of the first two volumes.
Still, this book does have some interesting war stories including some centered around the neutrality of Ireland, which isn't typically covered in comics. The art is passable and Namor delivers some great two-fisted war action.
Each issue of the Sub-mariner includes an Angel story and the first three were pretty good including two non-War crime stories. The last one was kind of weak
Overall, this is okay, but not nearly as good as the first couple volumes.