Complex sentence: Much of their fighting was conducted in notoriously dense grapefields, which provided excellent cover and concealment for insurgent forces.The 2nd battalion was based in The Pech River Valley, Kunar Province, home to the Korengal, Waygal, Shuriak, and Wata Pour Valleys.
Split into simpler sentences: Much of their fighting was conducted in notoriously dense grapefields, which provided excellent cover and concealment for insurgent forces. The 2d Battalion was based in the Pech River Valley, Kunar Province, home to the Korengal, Waygal, Shuriak, and Wata Pour Valleys.