yes
During World War 2, California was part of the United States, so any enemy of the U.S. would, by extension, have been an enemy of California. For example, Italy, Japan, or Germany.
Mainly u-boats, other enemy ships and enemy bombers
They were mainly Germany , Italy and Japan.
The basic answer is yes. In truth, it was more of a "well, they're the enemy of my enemy, so I'll work with them" situation.
Germany.
Japan
Germany and Japan
The question is unanswerable as asked since it does not define who the "enemy" is.
Japan
yes
Japan & Germany .
Their language was indecipherable to the enemy
I would say Germany. Although Japan was a big enemy.
During World War 2, California was part of the United States, so any enemy of the U.S. would, by extension, have been an enemy of California. For example, Italy, Japan, or Germany.
The USSR
yes