This is probably a long shot, but it doesn't hurt to ask. When I was in elementary and middle school in the late 80's/early 90's, I remember enjoying reading a series of books about World War II that the school library had. Unfortunately, I do not remember the author or authors, or publishers of these books. What I do remember is this: each was probably about 60 to 80 pages with pictures; each covered a specific battle, campaign, or topic; each had a glossy red cover with a black and white photo relevant to the topic, and the cover text was in black. Maybe someone else remembers these. I wouldn't mind finding a few editions for my World War II library, even if its just for childhood nostalgia.
FOUND IT. It was a series called "World At War" by G.C. Skipper. It came out in the early 80's and was geared towards grades 4-6. Thanks for looking! Here is an example of the a cover. My memory was off a bit, but not too bad considering I haven't thought about these books in thirty years. I recognized them though the moment I saw it.
The Marshall Cavendish books are good reads and lots of pictures. You can find the whole set at used book stores and websites.
I have the Coral Sea volume. Wife grabbed it up from a library discard pile for my amusement. And even more amusing, it was bound upside down, so you have to turn it over and start from the back.
I used to own an entire set of the Time-Life series and the Cavendish set. Lost them all in my oft-mentioned flood when I lived in Chicago. Now that I have a study I need to reassemble the sets. The T-L series has its issues, but they were part of my baptism into WWII history. I may enjoy seeing the completed set on the shelf more than reading them.
I noticed when my oldest was in middle school - she wouldn't want me to tell you when 'cause she's in her early 30's now - that what few volumes they had of the Time Life series in the library were truly on their last legs. So I boxed up my complete, and relatively pristine, set and carted them over to the middle school and said, "here, looks like you need these more than I".