I love the idea of this and how you have described the scene beautifully in your Author comments. I also like how you have chosen to answer Jazza's May challenge with a group of old people against a group of new. Great perspective from the army's point of view, you almost feel as if you are slowly marching towards your fate, a little reluctantly.
I would have liked to see the robots a little shinier and a little more clearly defined, especially the nearest one on the front left of the image. Although this might have lost the sense of perspective with objects being fuzzier in the background. A great imaginative piece, I love it!