wholesale destruction

• devastationSevere widespread destruction
• annihilationUtter, complete destruction
• obliterationTotal destruction or erasure
• carnageWidespread violent death
• ruinComplete destruction or collapse

ravage · demolition · decimation · havoc · wreckage · scorched earth · bombing · firestorm · massacre · apocalypse · cataclysm · genocide · extermination · eradication · razing · leveling · ashes · rubble