I remembered the number (dimly, first tried with 1390, couldn’t find anything after a few minutes) and googled ukraine war "total combat losses of the enemy" "+1380". The quotes are important because they tell Google to only show results that actually contain those terms, those exact terms.

So just good old Google-Fu.

Edit: By the way, I’ve been meaning to thank you for the clockwork regularity of your posts on here and keep forgetting it. So, thanks! 🙏