Organized marauders, a serious thorn in the back of regular armies

[Mohoender]

I was just comparing the numbers for both Afghan wars and figured out that, despite having more troops, less rebel to fight, and much improved technologies (GPS, computer assisted devices, MRAP vehicles...) we have not done much better than the Soviets in the same amount of time.

Afghanistan 1979-1989

State Forces
Soviets (115,000)
Gov (55,000)
Total (170,000)

Rebel Forces
Mujahideens (200-250,000)

Casualties
Soviets
Killed
KIA 12,916
Others 1,556
Wounded 53,753
Missing 211

Government
Killed 18,000

Mujahideen
Killed Unknown

Afghanistan 2001-2011

State Forces
NATO (132,400)
Gov (270,000)
Total (402,400)

Rebel Forces
Various groups (136,000)

Casualties
NATO (-contractors)
Killed
KIA 2,413
Others
Wounded 16,000+
Missing

Government
Killed 8956

Rebels
38,000 killed/captured

Stating that, I don't intend to make any political statement and I don't intend to blame anyone (just wanted to make things clear). I simply imply that in favorable conditions marauders and rebel groups represent a formidable foe even for an organized army.

Therefore, do you have any thoughts on organized marauder groups.