In Search of the Ultimate Weapon: The Fighting Machine in Science Fiction Novels and Films

Heldreth, Leonard G. "In Search of the Ultimate Weapon: The Fighting Machine in Science Fiction Novels and Films." TMG [129]-52.

See for the powered armor in R. A. Heinlein's Starship Troopers and J. Haldeman's The Forever War, and for extensive coverage of F. Saberhagen's berserker stories (all listed under Fiction).