Sutegamari, the Samurai Battle Tactic with a 100% Mortality Rate!

The "Lizard Tail" - Desperate Retreat Tactics Perfected and Performed by The Shimazu clan

Every army has a front line and a rearguard defense unit.  In samurai battle formations the Shingari, also called the Atozonae or Dengun was the rear-guard unit. The nature of combat in rearguard actions is typically desperate and violent, and rearguard troops are expected to incur heavy casualties or even to sacrifice their combat strength and personnel for the benefit of the withdrawing forces. For this reason, since ancient times, it has been regarded as an important role played by military commanders with excellent martial skills and character.