Army has lacked a forced-entry armor capability since the retirement of the M551 Sheridan. Neither the Stryker vehicle nor the Future Combat Systems (as currently envisioned) can fill that critical void. The authors conclude that it would be prudent for the U.S. Army to maintain a mix of heavy, medium-armored, and light forces that can be task organized and employed in conditions that best match their attributes. Medium-armored forces have much to offer in such a mix."--BOOK JACKET.