Russian troops without insignia that participated in the 2014 annexation of Crimea and further Russian-Ukrainian War
The "little green men" ( ; ) were Russian soldiers who were masked and wore unmarked uniforms upon the outbreak of the Russo-Ukrainian War in 2014. They were active just before and during the Russian annexation of Crimea and carried regular weapons and equipment, but were always masked and wore distinctly unmarked green military fatigues. Wikipedia