ribbon of saint george
https://en.wikipedia.org/wiki/Ribbon_of_Saint_George
Russian military symbol, consisting of a black and orange bicolor pattern, with three black and two orange stripes. Originates from many high military decorations awarded by the Russian Empire, the Soviet Union and the current Russian Federation.
Often used for commemorating the veterans of the Eastern Front of the Second World War (known in Russia and some post-Soviet countries as the Great Patriotic War), and since 2014, as a symbol of Russian and pro-Russian side in Russo-Ukrainian war. Since 2022, could be combined with z (military symbol).