The Benet-Mercie is an ancestor/relative of the Nambu light machine guns that the Japanese killed so many of us with in WWII. Basically a Hotchkiss (U.S.) design that was used well by the French and the Brits, too. Might have served us well if we'd ever stuck with it long enough to get the bugs out and get our troops properly trained. But machine guns were a new technology, and we were still figuring out what they were good for, and how to use them for it.