From battlefield to burial: Complex casualty identification using rapid DNA analysis in 21st century warfare

On October 7, 2023, terror organizations launched a large-scale surprise attack on Israel, resulting in the deadliest mass fatality incident in the nation’s history. The assault left 1,438 Israelis dead, 255 taken hostage, and over 1,600 assailants killed in defensive operations. In the immediate aftermath, the Israel Defense Forces (IDF) Genomic Center for Casualties Identification rapidly expanded its capacity by integrating rapid DNA technology and implementing refined sample prioritization protocols to accelerate the identification process. This mass fatality incident unfolded under unprecedented circumstances. Thousands of human remains, often fragmented, burned, or intermingled with those of perpetrators, were recovered across multiple sites. Conventional identification methods such as dental or fingerprint analysis were frequently unavailable, leaving DNA profiling the primary method of identification. The extreme scale and severity of the event meant that each case presented unique combination of sample types, often requiring repeated extractions and multiple testing approaches to obtain viable genetic profiles. These challenges, though described here in scientific terms, reflected the reality of a brutal attack that left families anxiously awaiting for closure, and forensic teams working around the clock in conditions rarely seen in civilian laboratories. Our findings indicate that while rapid DNA profiling enabled identifications in under three hours, the key determinant of timely results was precise sample triage and prioritization. We therefore propose a combined approach integrating strategic triage with fast-track DNA profiling to manage complex casualty events effectively. Using this approach, all casualties within our ground operations were identified within 2–3 hours. Beyond the technical achievements, this experience underscores the dual mission of forensic science during national crisis: to uphold the highest standard of accuracy and integrity, while performing this work with humanity and respect amidst profound loss. The lessons learned from October 7th, much like those drawn from 9/11 and the long-term work of the International Commission on Missing Persons (ICMP), which investigates mass graves and missing persons from conflicts and disasters, provide valuable guidance for forensic agencies worldwide, offering strategies to strengthen preparedness and resilience for future mass fatality incidents. • Management of complex casualty events • Sample prioritization rules • Principles in building forensic unit