We try to keep up with the latest in military robotics, so most of the participants of the recent Robeo in Ft. Benning, GA are familiar to us. This is a US Army annual 10-day event that challenges robots against each other in mock battle. Both new and updated bots took on each other with 45 companies, 5 universities and 74 technologies represented.
TARDEC (Detroit's Tank Automotive Research, Development and Engineering Center) ran 3 vignettes, testing reconnaissance, autonomous supply and foxhole digging. JIEDDO (the Pentagon's Joint IED Defeat Organization) ran four of them that centered on counter-IED missions with reconnaissance, bomb detection, endurance and disruption.
Vendors are represented as well and found out how to improve the efficiency of their tools. Check out some of the other participants via the link.