Russian "volunteers" "travel" to Ukraine

Russian veteran organizations mobilize the so called "volunteers" to help pro-Russian separatists in Ukraine. Some of them may even be the real volunteers but their make-up should raise red flags (irony intended) all over. Most of the "volunteers" are not just professional soldiers but former "spetsnaz", GRU and anti-terrorist units. They fought in Afghanistan, Chechnya and Georgia. The wear the same green, unmarked uniforms that supposedly could be easily bought in any sporting store in Russia and Ukraine.