Those Turkish drones have been bought in 2019 and AFAIK barely seen deployment for the fear of losing them. While the cheap drones are widely used by the army at the very least for reconnaissance. It's very hard to distinguish the Ukrainian army from the "volunteers", but the drone from the link in my previous comment was shot down just in 2020.
>BTW: 3 millions citizens of USSR were at Germany side in WWW2. Do you think it was civil war?
No, because those collaborationist have stayed mostly in the rear (e.g. see deployments of the SS "Galizien"), while on front lines fought forces from the invading countries. Also it's a matter of ratio. USSR was invaded by a 3.8M strong force, so even if you include those collaborationist, more than 50% of the invading force were foreigners. Meanwhile in today's DNR/LNR militia more than 90% of personnel are Ukrainian citizens (well, de jure, most of them don't think about themselves as Ukrainians anymore) and by a very strange coincidence in all recent prisoner swaps Ukrainian citizens were swapped for Ukrainian citizens. A very strange "Russo-Ukrainian war", don't you think?
To get a sense why it's a civil war, just watch footage from the early days of the conflict [0][1]. You can see that moving military forces have been actively blocked by simple folk who understood, that this unlawful deployment will simply result in Ukrainians killing other Ukrainians for political gain of the fresh-installed government.
BTW I do think that Chechen wars can be viewed as a civil war, even though the rebel forces were supported by Saudi and Kuwait money, and foreign mercenaries have actively participated in it.
BTW: 3 millions citizens of USSR were at Germany side in WWW2. Do you think it was civil war?