RAND's wargames show how US Armed Forces - colored blue on wargame maps - experience the most substantial losses in one scenario after another and still can't thwart Russia or China - which predictably is red - from accomplishing their objectives: annihilating Western forces.

"We lose a lot of people. We lose a lot of equipment. We usually fail to achieve our objective of preventing aggression by the adversary," he warned.

In the next military conflict, which some believe may come as soon as the mid-2020s, all five battlefield domains: land, sea, air, space, and cyberspace, will be heavily contested, suggesting the U.S. could have a difficult time in achieving superiority as it has in prior conflicts.

The simulated war games showed, the "red" aggressor force often destroys U.S. F-35 Lightning II stealth fighters on the runway, sends several Naval fleets to the depths, destroys US military bases, and through electronic warfare, takes control of critical military communication systems. In short, a gruesome, if simulated, annihilation of some of the most modern of US forces.

"In every case I know of," said Robert Work, a former deputy secretary of defense with years of wargaming experience, "the F-35 rules the sky when it's in the sky, but it gets killed on the ground in large numbers."

So, as Russia and China develop fifth-generation fighters and hypersonic missiles, "things that rely on sophisticated base infrastructures like runways and fuel tanks are going to have a hard time," Ochmanek said. "Things that sail on the surface of the sea are going to have a hard time."

"That's why the 2020 budget coming out next week retires the carrier USS Truman decades early and cuts two amphibious landing ships, as we've reported. It's also why the Marine Corps is buying the jump-jet version of the F-35, which can take off and land from tiny, ad hoc airstrips, but how well they can maintain a high-tech aircraft in low-tech surroundings is an open question," said Breaking Defense.