Second Variety is a short story by Philip K. Dick that was published in the May, 1953 edition of Space Science Fiction. It is a post-apocalyptic story in which the United States and the Soviet Union are still at war. The United States have designed an implemented robots to help them in the war, but some of the robots have gone rogue.
If you like science fiction, I think you might like this story. You can download it for free at: https://www.gutenberg.org/ebooks/32032
Tim's Rating: ****
(Four out of five stars)