[@Corporal Lance] With 11 billion active soldiers, it's impossible for everyone to have a deus-ex or Halo-style augmentation. Grunts do not have any augmentations, besides the few who must receive a cybernetic limb due to injury in combat. As soldiers climb the ranks, they are given the option to receive augmentations. And yes, a skilled engineer/specialist would be able to receive a neural uplink which would allow for them to interface with machines and such, but the functionality is limited, like activating switches and circuits and the like. Later upgrades would allow for much more advanced functionality.