War has changed, while most militaries are still fighting previous wars... as always. Constant surveillance (drones, aircraft, satellites) is a game changer.

Basically it comes down to:

1. it is guaranteed you will be observed on the battlefield no matter what "camouflage" you try to use, and

2. you will have various types of bombs dropped on your head shortly after being observed. Tanks, APC's, conventional troops, etc. are all sitting ducks as soon as they enter a battlefield.

If you read the article, it mentions that the troops being sent specialize in surveillance and artillery...