A Militant Umbrella

"Unbreakable Fighting Umbrella Splits Watermelons, Defends Presidents"
Gadget Lab from Wired.com (July 11, 2008)

"The entourage of the Philippine president, Gloria Macapagal-Arroyo, has an unusual secret weapon. Her security team defends the head of the government with umbrellas. Not ordinary umbrellas, but unbreakable fighting umbrellas. Watch the video to see the combat-brolly in action, and marvel as...."

There's a video in the article: rather impressive.

I think "combat-brolly" is a bit awkward, as a name for this device. Perhaps we should call it a "combrolly."