...good points Donna!
Also, it’s worth remembering that after a while the Roman army became untrustworthy because it was no longer Roman...it was full of people from other tribes...the backbone of the US Army has always been the white working class...that has changed a lot since VietNam....lotta people from other tribes in there now.
Depends on how you define "always." Some of the finest soldiers and officers in the United States Armed Forces over the last 50 years are other than white. The United States Armed Forces are color blind. The rest of the country could learn from them.