Answer:
A war of attrition was a strategy to wear down the enemy.
Step-by-step explanation:
A war of attrition consists of the military strategy in which there are some attempts to wear down the enemy and in this way win the war. These attempts tend to make the enemy lose a lot of personnel and materiel. Thus, the side with better resources will win the war.
Some Military theorists consider that war attrition could be avoided because war attrition opposes common war's principles which establish that those who win the war must only use necessary resources in a minimal time frame through different military strategies.