Tonight's posts (see below) have been largely technology-oriented, so I'll conclude with a video clip in the same vein.
We've visited Boston Dynamics' Bigdog and LS3 (also known as Alphadog) robotic transports in these pages before. The latter has now been sufficiently developed to take the field in practical, long-distance tests, and it seems to be doing well. Here's a video report showing its progress.
Alphadog (in its present form) can carry 400 pounds of cargo for up to 20 miles across country, accompanying (for example) a military patrol and freeing them from much of the weight of their kit. It's planned to make it respond to voice commands in future iterations; but I'm not sure that's such a good idea. After all, what happens if the enemy tells it to "Go away!" in the middle of a firefight, just when you need it to bring you more ammo?