Dírnaith

Dírnaith was a wedge-shaped battle formation invented by the Númenóreans, used mostly by the Dúnedain of Middle-earth.
The technique was designed to cleave through enemies' ranks over short distance, and scatter them into disarray. (If Isildur had been in a better position when ambushed by Orcs at the Disaster of the Gladden Fields, he would have commanded his men to form a dírnaith, and the battle may have gone differently.)Unfinished Tales, The Disaster of the Gladden Fields, pgs. 272, 282.
==Etymology==
Dírnaith is the Sindarin translation of Quenya nernehta, meaning "man-spearhead". 
==References==
Category:Sindarin names & words
Category:Soldier formations
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