On June 14, 2008, during a major battle group operation in the Zharey district of Afghanistan, elements of C Company were ambushed by insurgent forces. In an attempt to support a platoon that was pinned down under heavy fire, Sergeant Kapitaniuk repeatedly exposed himself to intense enemy fire to regroup his own troops and to relay counter-attack directives. His leadership, determination, and courage were vital to the effectiveness of his unit throughout the engagement and fighting withdrawal.