ESV: In the spring of the year, the time when kings go out to battle, Joab led out the army and ravaged the country of the Ammonites and came and besieged Rabbah. But David remained at Jerusalem. And Joab struck down Rabbah and overthrew it.
NIV: In the spring, at the time when kings go off to war, Joab led out the armed forces. He laid waste the land of the Ammonites and went to Rabbah and besieged it, but David remained in Jerusalem. Joab attacked Rabbah and left it in ruins.
NASB: Then it happened in the spring, at the time when kings go out to battle, that Joab led out the army and ravaged the land of the sons of Ammon, and came and besieged Rabbah. But David stayed in Jerusalem. And Joab struck Rabbah and overthrew it.
CSB: In the spring when kings march out to war, Joab led the army and destroyed the Ammonites' land. He came to Rabbah and besieged it, but David remained in Jerusalem. Joab attacked Rabbah and demolished it.
NLT: In the spring of the year, when kings normally go out to war, Joab led the Israelite army in successful attacks against the land of the Ammonites. In the process he laid siege to the city of Rabbah, attacking and destroying it. However, David stayed behind in Jerusalem.
KJV: And it came to pass, that after the year was expired, at the time that kings go out to battle, Joab led forth the power of the army, and wasted the country of the children of Ammon, and came and besieged Rabbah. But David tarried at Jerusalem. And Joab smote Rabbah, and destroyed it.
NKJV: It happened in the spring of the year, at the time kings go out to battle, that Joab led out the armed forces and ravaged the country of the people of Ammon, and came and besieged Rabbah. But David stayed at Jerusalem. And Joab defeated Rabbah and overthrew it.
