The Battle of Fom Kerdeth was a legendary Klingon battle where Bardak Linron, a traitor, fought the forces of Kahless the Unforgettable to a standstill. During those six days, many dead were recorded and many songs were sung. Ultimately, Kahless lost the battle when Bardak sent his best general, Renarg, to negotiate terms for separating the combatants.
Renarg arrived at the tent where Kahless's high command was located an made an arrogant list of demands. However, this was simply a ruse as he had strapped high explosives all around his body where it was concealed beneath the armor and clothing. He detonated the explosives which killed all of Kahless's general staff but miraculously the Emperor survived as he had stepped out to relieve himself from the night's drinking.