The real value of these people is them dying. UA is going hard on the social media war. It has everyone behind it. Getting some American/British/German deaths would get some major traction. I am sure that the government would love to post about 19 year old American murdered by evil Russians. "They are killing your people. Gibs us no-fly zone!"
I am still amazing that anyone would do this. Mercenaries do not get protections of soldiers.
They would not even be able to read signs. They would be completely lost. They might as well go mars and hang out with space aliens.
The US spent two weeks bombing Baghdad and then faced no resistance at all when they moved in. The Iraqi military gave up when everything started breaking down. The actual fighting did it. Had Iraq's military remained intact, it would have taken much longer even with all the dead civilians.