but when the war begun we became actually a vital part of the resistance. >> reporter: olexander sent us hours of video showing his team scoping out russian vehicles, even finding them when they're hidden and almost impossible to spot. and then helping the ukrainians hit them. >> we are eyes. we call eyes because with eyes you can see and you can report. and as soon as you see you can conduct strikes, artillery, airstrikes. >> reporter: how long does it take to get your information to the right places to then be able to act on the instelligence you provide? >> in good time it's a matter of minutes. >> reporter: and sometimes a little mosquito can take out a whole herd of evidence. this is drone footage of olexander's unit searching for a massive column of russian tanks and armored vehicles. and this is that column after the drones found it. olexander tells me units like his played a major role fending off russian troops despite the ukrainians being vastly outgunned. >> it's suicide, we need to go. but the army, they have to stay. they're ordered to stay, they stay. they're dying but t