two pearl harbor movies (Secret Agent of Japan, and December 7, 1941) were released within two years of the Pearl Harbor attacks. Eighteen WWII movies were made within five years of WWII ending. Several (including December 7, 1941) won academy awards for "paying tribute to those lost." It's all on IMDB.com.
Five yers is a long enough time. It's a quarter of most of our lives. A tribute is acceptable at this point.