The best modern and most recent example is the Hezbollah Israeli war in 2006 in Lebanon.
This is a US review of why hezbollah succeeded in its goals against israel and how they were able to do so.
https://www.armyupress.army.mil/Portals/7/combat-studies-ins...
I haven’t finished reading it yet but its very interesting. For example, they had hundreds of autonomous cells working with no single point of failure.
“Nearly 600 separate ammunition and weapons bunkers were strategically placed in the region south of the Litani. For security reasons, no single commander knew the location of each bunker and each distinct Hezbollah militia unit was assigned access to three bunkers only—a primary munitions bunker and two reserve bunkers, in case the primary bunker was destroyed.”
It also mentions they were taught and learned from North Korean war and Iran obviously.
This is not to glorify them, but if you read the review you can obviously see that what they achieved demands respect. As in respect for your adversaries strength.