They send both sexes, the Ukraine is down to just girls!
Sure, a country of 40+ million people, with an estimated 7 million men of military age are "down to just girls". Okay, or maybe many women are volunteering to defend their country.
Many Ukrainian women volunteering to fight against the Russians
Ukrainian women are not required to fight but many are taking up arms. Tetiana Chornovol is an anti-tank guided missile operator and it's her job to destroy Russian tanks and stop the Russian Army's advance on Kyiv.
https://www.nbcnews.com/video/many-ukrainian-women-volunteering-to-fight-against-the-russians-135816261510