The new Star Wars movies are pretty exciting. It freaked out the entire media landscape in a way unseen since the days before cable TV ensured we all didn't watch the same episode of Friends on Thursday night. As each trailer brings the new, Jar-Jar free reality of an impending new saga upon us, the inner child of someone who once read the Star Wars Encyclopedia cover to cover bubbles to the surface, realizing some of the tech seen in the new trailer for Star Wars: The Force Awakens would have been really useful on some real-world deployments.
Rey (played by Daisy Ridley) is a human scavenger on the desert planet of Jakku (that's not the desert world of Luke Skywalker's Tattooine). Jakku is home to thieves and other criminals and someone like Rey must survive by salvaging old parts and reselling them. Having protection from the elements in the harsh, dry, dusty environment (sound familiar?) of Jakku is a real plus.
Rey's eyepro is stripped from an old Stormtrooper helmet, giving her the same tactical advantage Imperial Stormtroopers had on the battlefield. Though it limits her field of vision, it does help her see in the dark, and through smoke, sand, and glare.
BB-8 "Roller Ball" Droid
As an Astromech droid in the line of R2-d2, the BB-8 droid can deftly work with electronic devices, which would do efficient work with deactivating explosive devices. The new droid comes with a number of improvements on the R2 unit's original design, including a head which appears to float on a 360-degree base, giving the robot vastly improved maneuverability for the rocky slopes of Afghan terrain.
Luke Skywalker's Cybernetic Hand
Although in some sci-fi epics, cybernetic hands are more of a problem, in the Star Wars universe, cybernetic limb replacements allow for full range of motion, full use, and full sensitivity. These prosthetic replacements connect mechanical parts directly to the user's brain via a neural net interface, covered by synthskin, to where no one would know the difference to look at it. This would be an excellent way to care for troops injured in Afghanistan, considering more than 1,000 lost limbs there. Good thing science already figured this one out. Thanks, DARPA.
What military unit wouldn't want an invisible force field to protect them from harm while they destroyed their enemies. It may not be necessary in Afghanistan, but it sure would be nice to have. It's much more necessary in the Star Wars Universe, where not having deflector shields looks like this:
Honorable Mention: Rey's Staff
It may not actually help in combat in Afghanistan, but if you want to see how Rey's skills with that staff weapon might look onscreen, check out this video of Daisy Ridley's stunt double, Chloe Bruce, working with one like it:
Close enough for government work, either with the U.S. or the New Republic.
And finally, we want lightsabers. Please, please make it happen, DoD.