In 2015, according to a publication on the Ministry of Defense's website, the Book of Remembrance had the most comprehensive dataset on fallen Ukrainian soldiers and fighters from volunteer battalions since the beginning of the hostilities.

The authors include founder and editor Maksym Popov, Yaroslav Tynchenko [uk], Herman Shapovalenko, Serhiy Kovalenko, and Svetlana Vihovska.

Initially, there were issues with the command base because the system of orders and military statutes did not align with the reality of the situation—Ukraine was not prepared for war, and thus, there were no provisions for recording casualties, especially those occurring outside Ukrainian territory.

Press centres for the Anti-Terrorist Operation and Ministry of Defense only report the number of fallen servicemen of the Ukrainian Armed Forces, excluding National Guardsmen, volunteers, or similar.

[5][6][7] The ban was the consequence of posts about the deaths of members of the Azov Brigade in Donbas, which, following reports and complaints from anti-Ukrainian users, Facebook administrators mistakenly regarded as Nazism propaganda,[7] a common talking point in Russian disinformation to justify the invasion of Ukraine.