How did the Dark Lord prevent defeat from 🧌orcs's rout

[Hisoka Morrow]

Yeah, orcs were always the greatest free people war heroes as their route always led to the Free People's victory as we all knew that when a route took places in armed forces's tactical ranks during combat, then good luck, yet there're several cases that the Dark Lord did save the day from orcs rout, such as the battle of Unummbered tears, so...how did the Dark Lord did so? Freindly fire without distiction was the most possibly rude but effective option, such as the possible Dragon's fire in the Unumbered Tears killing all the fleeing orcs thus they wouldn't mess the deployment and so on.
All direct sources and indirect sources from JRRT were all welcome to post.

 

[Squint-eyed Southerner]

Took me a minute -- the word you're looking for is "rout". In any event, I doubt either Morgoth or Sauron would worry about killing off some of their orcs, if it helped their tactical or strategic goals.