Operation Memento is a military operation conducted by the United States in Iraq during the Iraq War. The mission was to capture or kill high-value targets of the Iraqi insurgency. The term 'Operation Memento' is derived from the Latin phrase 'memento mori, ' which translates to 'remember death.' The crossword solution for this term is SCAR, which stands for Special Combat Air Recon, a type of reconnaissance mission conducted by the US Air Force.