IPA: /ˈmɑːrʃəl/
KK: /ˈmɑrʃəl/
Related to soldiers, war, or the military; often used to describe things that are suitable for or characteristic of a warrior.
He trained in martial arts to improve his self-defense skills.
Martial is derived from the Latin word "martialis" (meaning of Mars), which comes from "Mars" (the Roman god of war). The term originally referred to anything related to war or combat, reflecting the qualities associated with the god Mars.
Think of the Roman god of war, Mars, to remember that 'martial' relates to war or combat.