Even before that, I feel like the abolition of conscription has changed the stock of American soldiers (who used to be prime-age males from all walks of life), to a much younger cohort where misfits and lower classes were overrepresented.

I think perception of American military strength rests somewhat on the image of the square-jawed, rugged soldier, which was very much a staple of combat propaganda, but used to be more like an embellishment of the truth, rather than outright fiction.

Video games of the 2000s-2010s, like the CoD series, have usually cast this WW2-Vietnam era image onto the GWOT era, with the heroic characters fighting in the middle-east this time. It was kind of surreal to see actual authentic footage of awkward gangly teens wearing the same uniforms.