Konpeki no Kantai

Konpeki no Kantai is a Japanese alternate-history original video animation series produced by JC Staff. Based on a 1992 novel by Yoshio Aramaki, the series focuses on a technologically advanced Imperial Japanese Navy and a radically different Pacific War that was brought about by Admiral Isoroku Yamamoto's revival in the past due to unexplained circumstances. The series also features real-life 1940s figures whose first names were changed, such as Winston Churchill to Kingston Churchill and Adolf Hitler to Heinrich von Hitler.
(Source: Wikipedia)