Could Open Source Intelligence Be Used to Document War Crimes?

If there is a large scale invasion of ukraine, the experts we've spoken to have said that sanctions may not be the most effective way to end such an invasion. It would probably be through supporting some type of a symmetric warfare with ukraine and the guorilla fighters. The us. Has went so far as to say that they will be delivering weapons, ammunitions, gas lubricants to ucranian resistance fighters through ground routes. So assuming this worst case scenario happens, could open sourced material be used in somewhat of a real time to both expose these supply chain routes, expose locations of resistance fighters, and then give that information to russia? Absolutely it