As a noun: 戦闘 /sen tou/ means 'combat, war'. 戦い /ta ta kai/ means 'fight, battle, combat' which has more general usage and can be synonymous.
As a verb: 戦闘する /sen tou su ru/ for the first and 戦う /ta ta ka u/ for the second term.
戦闘 /sen tou/ means 'battle, fight, combat'.
KARATE
Combat experience.
Samurais are Japanese warriors, known for their code of honor and skill in combat.
Samurai were Japanese warriors, known for their loyalty, honor, and skill in combat.
aggresively expand japanese territory to secure more resources.
They were fought in combat; on land, sea, and air.
The Japanese planned on attacking the Aleutian Islands to combat the "island hopping" strategy that Douglas MacArthur was using in the Pacific Ocean.
Japanese Americans.
The 442nd Infantry Regiment (442nd Regimental Combat Team)
442nd regimental combat team
Judo (without weapons)/Karate (empty hands).