Restoring family links has been at the heart of the ICRC's mandate since the organization's earliest days. ICRC researcher Cédric Cotter explains how the role of the ICRC Central Tracing Agency has evolved since the Basel Agency for the Franco-Prussian war in 1870. Dušan Vujašanin talks about the work and challenges of the most recent Central Tracing Agency Bureau he heads, which was set up in March 2022 for the Russia-Ukraine international armed conflict.