A fork of Rural Dictionary
Anytime a grunt (infantry fighting person), or a group of grunts design something for a specific situation, in a short period of time, to solve a real time problem on the battlefield. Essentially, arts and crafts for military people, but on the fly.
An example of this would be retrofitting Humvees to survive IED attacks. Or when the USMC outsmarted DARPA's AI with cartwheels and carboard boxes.
They needed to fix the machine gun, so they had a grunts and crafts session to solve the problem.