First edition tends to be directly tied with the World in Flames boardgame (making it harder to implement). This gives a good overview of the buildup to war, but requires some tinkering for classroom use.
These cover various aspects of navy fighting at the turn of the 20th century. They are interesting for their discussions of the U.S. Navy Color Plans. These are easier to use if the teacher is already a â€œgamerâ€.