It does act a bit like a dog.
As for military applications, those would have to be designed separately. The robot in the video just tries to cope with the obstacle (the blocking human) and just shrugs off the obstacle when no longer blocked. There's no hint of aggression.
I wonder when Boston Scientific will get around to making a robot pack mule or pack horse. There's be an interesting optimization problem involved, as part of the payload for the "buggy" would be a portable energy source.