In 2017, the non-battle casualties of the Armed Forces of Ukraine in the Donbas conflict zone constitute 98 dead and 178 injured soldiers, according to the response of the Ministry of Defence to an inquiry from 112.ua.
112.ua: Non-battle casualties of Ukrainian Army in Donbas in 2017 – 98 dead, 178 injured
The Ministry of Defence doesn’t specify the number of soldiers deployed in Donbas.