We’ve supported our friends in the Alter Ego Battalion with small donations since it was formed, back when it was just a separate unit. UGVs—remotely controlled mini-tanks—can evacuate the seriously wounded or bring food and water to infantry in trenches that other people can no longer reach. Just a year ago, few believed these vehicles could one day change the course of missions. This year, they’re already taking independent action in the defense of entire cities, and Alter Ego’s engineers are pioneers in their use.

In the spring of 2025, however, the range of the secure signal severely limited what they could do. Together with agricultural drone development specialists we met through our drone workshop, we helped the ground-drone company’s engineers design a 3D-printed fixed-wing drone to boost the signal. Over four months, we selected every component, from the propeller to the last sensor, refined the design, and printed and tested two prototypes. But technology is advancing rapidly in Ukraine, and a new technological breakthrough solved the difficult problem of secure communications well ahead of the enemy. We therefore disassembled all the printed fixed-wing prototypes into individual components, which remain highly useful for developing ground drones. We handed over components worth a total of CZK 38,797 to the battalion’s engineers for further development. We also handed over a Prusa Core One 3D printer donated by PRUSA RESEARCH to the battalion. KoridorUA arranged delivery of the printer.