| Commander-in-Chief: | Ryū Kumohira |
| Minister of Defence: | Mizuhara Soichiro |
| Branches: | Royal California Army Royal California Navy Royal California Marines Royal California Coast Guard Royal California Air Force Imperial Homeland Security Agency Imperial Defense Initiative |
| Active personnel: | 1,758,900 |
| Reserve personnel: | 4,788,192 |
| Founded in: | 1845 |
| Ages qualified for service: | 18 |
| Available for service: | Able-bodied Male and Females |
| Conscription law: | None (Voluntary service) |
The Royal California Armed Forces, officially the Royal California Armed Forces and Imperial Homeland Security Agency, (Japanese: 王立カリフォルニア陸軍帝国国土安全庁 Ōritsu Kariforunia Rikugun Teikoku Kokudo Anzen-chō) are the military forces of the California Imperial Republic. It consists of the Army, Navy, Marines, Air Force, Homeland Security, and Coast Guard. The President of the Republic of California is the commander-in-chief of the RCAFIHSA and works with the Vice President to lead the Imperial Homeland Security Agency.