system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:What exactly is a "confirmed kill" and how are they confirmed?

Obviously I know what a kill is, and obviously the definition of confirmed means they verify that it actually happened. But, what is the process for confirming a kill?
gpt
Confirming kills varies by military branch and by country, and also by time frame (ie; confirmation was different in WWII than in Vietnam or today). Many just need it to be witnessed by a spotter, some have to actually retrieve proof of death. For the most part, however, nowadays "confirmed kills" are only kept track of within sniper teams. The term gets thrown around a lot in the media because it sounds super awesome, but most modern military branches are not keeping track of their soldiers' kill tallies.