This is the 666th most frequent Korean word.
전략을
"전략을" means "strategy" (accusative form).
Here, "전략을" serves as the object of "사용해야 합니다" (must be employed), emphasizing the application of a strategy for success.
전쟁에서 승리하기 위해서는 효과적인 전략을 사용해야 합니다.
To win the war, an effective strategy must be employed.
The phrase "전략을" functions as the object of "도입했다" (introduced), showing the implementation of a strategic plan.
사업 성공을 위해 회사는 새로운 전략을 도입했다.
The company introduced a new strategy for business success.
In this sentence, "전략을" (strategy) is used as the object of the verb "세운다" (devises), indicating an action to create or prepare a strategy.