Russia has lost around 1,208,970 troops in Ukraine since the beginning of its full-scale invasion on Feb. 24, 2022, Ukraine's General Staff reported on Jan. 1.
The number includes 1,060 casualties that Russian forces suffered over the past day, the General Staff said.
According to the report, Russia has also lost 11,488 tanks, 23,849 armored fighting vehicles, 72,418 vehicles and fuel tanks, 35,678 artillery systems, 1,587 multiple launch rocket systems, 1,266 air defense systems, 434 airplane
Does this follow the general definition of casualty being either killed, wounded, missing in action, or taken prisoner?
When it comes to counts of Russian losses provided by the Armed Forces of Ukraine (like here), Wikipedia has the following note:
https://en.wikipedia.org/wiki/Casualties_of_the_Russo-Ukrainian_war#Russian_invasion_of_Ukraine_(2022–present)