References to Gen Milley's speech have been posted across the internet, with his mention of "little green men", and the thought that he was referring to ETs. In actuality LGMs are unidentified Russian agents!!!
Lymerick

The referenced part of Gen. Milley's speech:

“If the world if 1916 was complex, or the world of 1945 was complex, the world of 2016 is intensely complex, and I can tell you that from personal experience,” he said. “You’ll be dealing with terrorists, you’ll be dealing with hybrid armies, you’ll be dealing with little green men, you’ll be dealing with tribes, you’re going to be dealing with it all, and you’re going to be dealing with it simultaneously.”
http://www.armytimes.com/story/military/careers/army/2016/04/22/army-chief-leaders-winning-everything-combat/83395612/

Please refer to: "Little Green Men" a primer on Modern Unconventional Warfare Ukraine 2013-2014 in browser.