Found this interesting

[Suhiir]

Stumbled across this recently and found that tho it's obviously VERY U.S. centered the overall analysis of it's various points is pretty interesting.

https://apps.dtic.mil/sti/pdfs/AD1014512.pdf

[Karagin]

The current uptick in Retro is New Again for all branches of the US military is something that can be seen as both alarming and interesting.