The Russians are struggling with recon. That’s just one of the latest Ukraine battlefield assessments Marine Corps Commandant Gen. David Berger gave on Wednesday.

It appears that Ukrainians are disrupting the Russians’ movements, Berger said, in part by preventing Russians from having a clear understanding of “what’s in front of them,” and confusing the invading forces.

In addition, Ukrainians are winning the “information space,” Berger said, and using the “inherent strength” of being in a defensive position against an invading force, which can be difficult to overcome, Berger said.