World War II Sea War, Volume 21:Volume 21 contains additions and corrections to existing entries from Volume 6 of the World War II Sea War series. In Volume 21 you will find extensive additions to Japanese military and merchant ship movements, as Japan tried to consolidate her newly acquired Pacific empire. There is also new data on the Royal Indian Navy, German U boats, and the Royal New Zealand Navy. In addition, the monthly General sections have been expanded to help form the