also: パルティザン
noun
partisan
Refers to a member of an irregular armed force fighting against an occupying power, or more broadly a strong supporter of a cause. Loanword from French.
from French
第二次世界大戦中、多くのパルチザンがナチスに抵抗した。
During World War II, many partisans resisted the Nazis.
彼
He is a passionate partisan of the environmental movement.