Forbes has an article that goes into some details of the challenges of the US armed forces in places like Afghanistan.
Marines Pursuing Climate Control Solutions To Reduce Battlefield Fuel Consumption
One of the lessons learned is that running systems in energy efficiently can lead to lower maintenance costs and better uptime.
So, to solve this problem, the Marines tried using batteries.
Partner energy storage with a generator, Newell said, and “I can ensure that anytime that generator is on, it’s running at 80% to 100% load. My fuel efficiency went up, my hours went down. I have more quiet hours.