Here is some more information which explains the differences between the Japanese flags.
Japanese Flags
Civil and State Flag and Ensign
Description:
A red disk on a white field. The disk is known as the Hinomaru, a mon representation of the sun. It can be used on land and sea by civilians and government (excluding military).
Adoption Date and related information:
Although the hinomaru has been a symbol and flag of Japan for centuries (and unofficially a national flag since 1868), it was not officially adopted as the flag of Japan until 1999. The flag dimensions were set at 2:3.
Naval Ensign (War Ensign)
Description:
A hinomaru set towards the hoist, with 16 red rays.
Adoption Date and related information:
Following World War II, the War Ensign, which had been in use by the Japanese Navy since 7 October 1889 the flag use was discontinued as part of the treaty of San Francisco until 30 June 1954 when readopted for use by the Japanese Maritime Self-Defense Force. Proportions are 2:3.
Ground Self Defense Forces (War Flag)
Description:
A hinomaru with 8 red rays extending outward. A gold border lies partially around the edge.
Adoption Date and related information:
The War Flag was adopted 30 June 1954 as the flag of the Japanese Ground Self-Defense Force. It's proportions are approximately 8:9.
http://www.flag.de/FOTW/flags/jp_fact.html
Bookmarks