+ 5/26/22 Pentagon press briefing claims that there were 110 Russian BTG in the Ukraine. There were around 124 BTG (IIRC) at their highest point. Ukrainian General Staff claims that many of these BTG are degraded and merged together.
+Updated BBC RU count- 3,211 Russian dead corroborated by publicly available data as of June 3
https://zona.media/translate/2022/05/20/casualties_eng
DPR official casualty report 26 February – 2 June 2022: 1,986 killed, 8,199 wounded
LPR (no update yet aside from 600-500 KIA reported by Russians around April 4th).
https://ombudsman-dnr.ru/obzor-soczialno-gumanitarnoj-situaczii-slozhivshejsya-na-territorii-doneczkoj-narodnoj-respubliki-vsledstvie-voennyh-dejstvij-v-period-s-28-maya-po-03-iyunya-2022-g/
Of the June 3rd (3,211) BBC RU death count,
657 VDV, 154 Marines, 118 National Guard (eg. Chechen forces), 91 Spetznaz
24 warplane pilots and 10 helicopter pilots
Regular forces: 632 Riflemen, 217 tankers, 93 artillerymen