Spanish is frequently heard on Ukraine's front lines due to the increasing presence of Colombian soldiers. These men are motivated by high salaries, the sense of adventure, and a desire to support a cause.

On the most dangerous parts of Ukraine's front line, it's almost as common these days to hear Spanish as Ukrainian. Many Colombian soldiers are now fighting in Ukraine, lured by the comparatively high salaries, but also by a sense of adventure and of helping a good cause. Our reporters Gulliver Cragg and Catalina Gomez travelled around Colombia and Ukraine to understand what drives these men to go to war and what their families think.