Nips (short for Nipponese), or Japs were the primary terms. I'm sure other terms that were derogatory were used, and these varied from place to place.
Because they were using sarcasm to tell them u guys are sloppy and have no trained army
Revolutionaries or Minutemen(supposedly because they were ready in a minute)
Japan invaded China in 1937. The Japanese fought against the Chinese until the Second World War ended in 1945. The Chinese do not call it World War 2. The Chinese were only fighting the Japanese during this period, so the Chinese people call it "The War Against Japanese Aggression". It is also referred to as the Second Sino-Japanese War. The Japanese soldiers killed many Chinese people. There is a very good book and movie called "The Rape of Nanking". The Japanese soldiers cut off the heads of many Chinese people. They raped many thousands of Chinese women. They threw babies into the air and caught the babies on the tips of their bayonets. They buried many Chinese people alive. To this day, many Chinese people do not like the Japanese.
Japanese call their country "Nihon" or "Nippon".
What the Japanese call Kanban, the English speaking world calls just in time ordering
they calles the Germans krauts
During World War II, American soldiers had many names for their primary enemies. Italians were disparaged as "Eyeties", Germans as "Krauts" or "Nazis" or "Fritz" or "Jerries", and the Japanese as "Japs" or "Nips", among many other insulting or catchy nick-names.
Yes, world at war a lot more bloodier, you can blow off limbs in world at war and the Japanese were very brutal soldiers.
"American Capitalists", "Yankees", "GI's", and "Yankee Imperialists."
It is because of the world war1 with African-American history when he freed the black people from slavery
the continentals
They called American troops "Gringos"
They may call the Afghan's hadjis.
The japanese imperial army
Because they were using sarcasm to tell them u guys are sloppy and have no trained army
Japanese and the Russians
They were call "Poilu."