Since there is no single, widely-known established book or movie by this exact title, I have drafted an original short story based on the most likely themes associated with a "BETA" military designation: experimental consciousness, glitching protocols, and the line between man and machine.
The monitor flickered, casting a rhythmic amber glow across the cold concrete of the observation room. On the screen, a single line of text pulsed: BM-10 [BETA]
"Unit 10, initiate Reboot Protocol Gamma," Aris commanded, her voice trembling. Since there is no single, widely-known established book
"I died there, didn't I?" the BM-10 asked. The voice was no longer mechanical. The filters had dropped. It was the clear, terrified voice of Sergeant Elias Thorne, who had been buried with full honors three months ago. "You didn't bring me back. You just copied the scream." "I died there, didn't I