One term is disarmament.
Disarmament. To remove weapons is to disarm .
Disarmament.
It is the removal of half of the stomach called a gastroectomy
A collection of weapons is an arsenal.
There is a brain teaser that goes "The removal of an appendix is called an appendectomy. The removal of tonsils is called a tonsillectomy. What do you call the removal of a growth from the head?" The answer is "a haircut."
PREFIX: dis- ROOT: armament (removal of) + (weapons) = disarmament
The removal of both testes is called castration.
The removal of waste products from the body is called excretion
Spleen removal is called an open splenectomy or a laparoscopic splenectomy, depending upon how it is performed.
Removal of nutrients from soil is called leaching
They began with using weapons such as rocks and spears, but soon they used guns.
Oophorectomy