Why did American soldiers have a reputation for being the most ruthless in hand-to-hand combat?

why did American soldiers have a reputation for being the most ruthless in hand-to-hand combat World War II was full of brutal battles but did you know that American soldiers had a reputation for being the most ruthless in hand-to-hand combat why were the Germans so afraid to face them headon first the training unlike many other armies American soldiers underwent intensive hand-to-hand combat training the instructors were often experienced fighters from boxing and wrestling many American soldiers had experience in street fighting or participating in Combat Sports before they were even drafted after several bloody battles rumors of American brutality and ruthlessness began to spread among German troops this created an effect of fear and psychological pressure even experienced German soldiers became nervous at the thought of possible hand-to-hand combat with the Americans