Bruce,
You didn't answer what a special forces brigade does. I didn't ask about a TL-16 SF br., but any SOF br.
Had you ever considered why high value targets that can be defeated by small-unit tactics require a brigade organisation which usually encompases four battalions?
You mentioned tactics and training, but why would you need them if you have the "sizeable TL advantage"?
The technological correlation between the US and allied forces in Iraq and their opponents was roughly that of widely TL-differentiated forces. There was no shortage of SOF available to the US/Allied command. So what happened?
No sooner did the US/Allied forces left when ISIaS emerged and is now being 'destroyed and degraded' for over two years by superior TL forces.
I can equally point to the US Vietnam and Soviet Afghanistan wars, though Soviets did somewhat better in Afghanistan.
Greg