Whats bad is that we have already pretty much surpassed the Colonial Marines in terms of on the ground technology. Sure they have stealth tanks and what have you but in other areas we have already surpassed them.
That far in the future they are probably rocking combat suits powered by exoskeletons and have HUDs that show troop and enemy movements and let them see in different visual spectrums, etc.
That landwarrior project that was almost but no quite cancelled allows a unit to see a map in their eyepiece and is updated as the troops clear buildings within the map. That tech will be perfected in the future. Likewise they are already working on exoskeletons for supply purposes (cough bullshit cough) to help lessen the burden on the trooper.
If you look at some of the stuff DARPA is working on it is downright crazy. Soldiers with telekinetic powers, the ability to regenerate lost limbs, don't need sleep etc.
One day we might be biomechanical hardasses ourselves.