The 442nd regimental combat team, the most decorated unit of its size in american history, was made up of african americannative american (navajo)japanese american volunteers

The 442nd Regimental Combat Team, the most decorated unit of its size in American history, was made up of Japanese American volunteers.

Explanation:

The 442nd Regimental Combat Team was an American infantry regiment made up of Americans of Japanese descent known as Nisei, whose value was legendary in the European theater and won 18,143 medals, most of them in the so-called Road to Rome and in the reconquest of France. The 442nd Infantry Regiment is considered the most decorated regiment in the history of the Army of the United States of America.