戦 (Kanji for fight)

Onyomi

SEN

SEND the soldiers to fight with merely a spear? Are you mad???? Give them guns and shit like that. Hella flamethrowers.

( と ) たたか＊う	fight physically - either with fists or armies. (sometimes used figuratively - fight crime!) But in any case, 戦う usually refers to an ongoing struggle rather than a single barroom punch-up. ★★★★☆
たたか＊い	a fight ★★★★☆

戦争(せんそう) する

war ★★★★★
戦 (fight) + 争 (battle) = 戦争 (war)

挑戦(ちょうせん) する

challenge ★★★☆☆
挑 (challenge) + 戦 (fight) = 挑戦 (challenge)

challenge (challenge yourself to do better, test your limits / challenge the system) be defiant or provocative. take the pepsi challenge!

作戦(さくせん)

strategy ★★☆☆☆
作 (make) + 戦 (fight) = 作戦 (strategy)

any strategy for succeeding － in war, business, school, etc.

attack
攻める攻撃合戦襲う討つ襲撃する

carry out /put into effect
実戦行う設ける制定実施創立成立

challenge
いどむ挑戦

fight
喧嘩戦う闘うもみあい殴り合い戦闘合戦

strategy
作戦戦略