Earth 2 Tech has a list of ways the military is using eco-technology. It includes solar power tents, aviation bio-fuel, micro fuel cells, hybrid drive technologies, and personal solar cells for recharging in the field.
There is a great deal of money in the military, and often research and innovation comes out of the military side that trickles down to civilians (night vision, Hummers, etc). It would be intriguing if green technologies are invented in the military industry have an effect on daily life. So far, however, most of these innovations look like they’re being taken from civilian industries and being tested in military arenas.
Now all we need is a eco-DARPA and we might see some very interesting results!