Primarily a naval war. Tough going, as everything had to be deployed by ship; planes, tanks, troops, artillery, ammo, etc.
World War II.
it was in afraid of war after world war 1
In World War 2
World war 2
japanese and australia
Because there was a war going on; and they were a combatant in that war.
they were in war with the japanese/germans/italians
In World War 2, the bombing of Pearl Harbor by the Japanese drew the U.S. into the war.
An allied power during that war.
Japan was in the Russo-Japanese War, the Boxer Rebellion, two Sino-Japanese Wars, World War 1, and World War 2. In all cases the goal was imperial expansion.
Europe in the German war, and Asia in the Japanese war.
The War changed the Americans attitude toward the Japanese because they found out after World War 2 the Japanese Americans were innocent of helping the Japanese bomb Pearl Harbor.