"Outsourcing war: How foreigners and mercenaries power..." Topic

… UAE's military.

"In California's Mojave Desert last year, an American man wearing a helmet and body armour stood in front of a line of rifle-toting Emirati troops who were in the United States for military training.

"My name is General Stephen A. Toumajan," he tells the camera in a distinctly American accent, his thumbs gripping the sides of his heavy bullet-proof vest. "I'm the commanding general for the Joint Aviation Command in, uh, UAE."

He did not misspeak: Gen Toumajan, a former lieutenant colonel in the US Army, is the commanding officer of the United Arab Emirates' military helicopter branch. He wears the UAE's uniform, gives orders to Emirati troops and – when he meets with American counterparts – is identified as a general of a foreign force…."
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Amicalement
Armand

Nothing new, British officers have been working in the Gulf states for decades……

And Germans in Turkey and China before the war(s)
And French in all those African states…
In the Arabic penninsula in particular, where weapons are an anxiolitic and technologies not halal, nor can be learnt widely as they mean power disseminated, mercs are there in the military and civilian organization to do most of the technical jobs or even command such things, as they need to master them.
Slaves are doing the menial jobs.