Los Angeles Campaign
Part of World War II and Second American Civil War
Internment1 Citysoldiers
Left: Japanese-American recruitees and their families arrive at Santa Anita racetrack for assignment into temporary shelters and units. Right: Imperial Japanese soldiers resting in Pasadena after a firefight.
Date 14 February 1943 - 9 September 1947
Location Greater Los Angeles Area, California, USA
Result Decisive Seccessionist Alliance victory
Seccessionist Alliance
Flag of California (Land of Empires) Republic of California
War flag of the Imperial Japanese Army Empire of Japan
Flag of Mexico (1934-1968) United Mexican States
Flag of the United States United States of America (1943-45)
Union of American States Flag Proposal (Land of Empires) Union of American States (1945-47)
Flag of California California Government
Commanders and leaders
War flag of the Imperial Japanese Army Isoroku Yamamoto
Flag of California (Land of Empires) Chester William Nimitz
War flag of the Imperial Japanese Army Tadamichi Kuribayashi
Flag of Mexico (1934-1968) Lorenzo Guzman
Flag of the United States Union of American States Flag Proposal (Land of Empires) Holland Smith
Flag of the United States Union of American States Flag Proposal (Land of Empires) Raymond Spruance
79,600 soldiers
995 aircraft
2300 artillery pieces
554 tanks
7 destroyers
3 battleships
2 aircraft carriers
1 submarine
93,740 soldiers
1200 aircraft
7000 artillery pieces
450 tanks
10 destroyers
6 battleships
2 aircraft carriers
Casualties and losses
8000+ killed
10000+ wounded
1700 POW
137 tanks destroyed
500+ artillery pieces destroyed
330 aircraft destroyed
1 battleship sunk
4 destroyers sunk
15000+ killed
9700+ wounded
2000+ POW
4340 artillery pieces destroyed
500+ aircraft destroyed
376 tanks destroyed
5 destroyers sunk
4 battleships sunk
1 aircraft carrier sunk

The Los Angeles Campaign, codenamed Operation: Peacock by the American Army and Operation: Tenshi by the Japanese and Californian Armies, was an military campaign fought from Valentines' Day 1943 until the unconditional defeat and surrender of the Union of American States in 9 September 1945 in the Greater Los Angeles Area. It was one of the largest offensives ever undertaken by the American Army against the Secessionist Alliance and their allies.

On Valentines' Day 1943, the California National Guard and the elements of the United States Army began an invasion to retake the Greater Los Angeles Area in what is know known as the Valentines' Day Offensive. The well-prepared United States Army overwhelmed the battle-weary Japanese and Californian positions in Irvine and Temecula. They continued to push until they reached West Los Angeles. The United States Army pushed through Chino and Ontario until they were met with a fierce Japanese and Californian entrenchment in Pasadena.

The Japanese and Californian forces, surprised by this sudden invasion, launched numerous defensives and offensives against the United States. With the reorganization of the United States onto the Union of American States, the US forces made a temporary ceasefire from Thanksgiving 1945 to January 5th the following year. This ceasefire allowed the Japanese and Californians to rest and more Japanese troops arrive alongside Mexican troops from the South. The combined Japanese, Californian, and Mexican forces was able to push the UAS forces out the San Bernandino County and San Fernando Valley. They continued to the force the UAS forces out of numerous cities until the UAS announced unconditional surrender.

The Los Angeles Campaign was an important battle in both the Second American Civil War and Second World War. It marked the strength of the people of California and the amount of support it had. This campaign also marked the beginning of the Weaponized Sodium Era.


1942, California declared independence from the United States and established itself as the Republic of California. In response the California National Guard and the US Army attempted to stop the revolting soldiers, but it didn't work out. Soon, an ultimatum was issued by the Republic of California to the United States to cease hostilities. The US responded by sending more soldiers. With US early victories, the US Army and Marines made their way into the Greater Los Angeles Area. The Japanese army had pledged support to the Californian Army and followed through. Soon, half of the California National Guard turned on the US and began fighting for Californian independence. In 1943, the US Army decided to launch an offensive against the Californian and Japanese forces in the Greater Los Angeles Area.


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