![Russian cossack uniforms during the First World War. From left to right: Don cossack, Ural cossack, Foto de Stock, Imagen Derechos Protegidos Pic. MEV-10639006 | agefotostock Russian cossack uniforms during the First World War. From left to right: Don cossack, Ural cossack, Foto de Stock, Imagen Derechos Protegidos Pic. MEV-10639006 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/b0dd7362cf36fb6cbe537eb1439e621c/mev-10639006.jpg)
Russian cossack uniforms during the First World War. From left to right: Don cossack, Ural cossack, Foto de Stock, Imagen Derechos Protegidos Pic. MEV-10639006 | agefotostock
![Cossack Officer's Uniform worn by Tsrevich Alexei Nickolayevich, circa 1910. | Военный стиль, Русская мода, История моды Cossack Officer's Uniform worn by Tsrevich Alexei Nickolayevich, circa 1910. | Военный стиль, Русская мода, История моды](https://i.pinimg.com/originals/5f/da/e2/5fdae23f09700078f1e66688ccdfabaf.jpg)
Cossack Officer's Uniform worn by Tsrevich Alexei Nickolayevich, circa 1910. | Военный стиль, Русская мода, История моды
![russia - Help with identifying my great-grandfather's pre-WWI Cossack uniform - History Stack Exchange russia - Help with identifying my great-grandfather's pre-WWI Cossack uniform - History Stack Exchange](https://i.stack.imgur.com/w323B.jpg)