Any Ukrainian citizen may engage in [a fight against the enemy](https://defence24.pl/war-on-ukrainie-report-special-defence24/600-Ukrainian-is-chetny-up-to-legion) and [support armed forces](https://defence24.pl/geopolitics/president-andrzej-duda-Polish-is-leader-help-for-Ukraine). How? By providing a resource that plays a key function in war. It's very valuable information.
