1984-1986 composite armor development cycle

"In 1984 there was no armor that could not be penetrated; by 1986 there was no propellant that could penetrate the modern armor." The composite metal-ceramic armor solution.

Within a year they had developed new types of armor that could not be punctured. In 1984 there was no armor that could not be penetrated; by 1986 there was no propellant that could penetrate the modern armor. The modern armor was a composite — layered with metal and ceramic. It's actually a metallurgical reaction that allows the copper to go through steel — it's an embrittlement reaction of copper and steel. You put ceramic in between, you don't embrittle ceramic with copper, so you can stop it.