Late in December, the destroyers sailed to Pearl Harbor to prepare for the next offensive, departing 22 January 1944 for the Marshall Islands. Benefiting from experience gained in previous engagements, the Navy launched a coordinated attack on Kwajalein Atoll on 31 January. "John Rodgers" provided anti-aircraft and anti-submarine protection, and supported the landing forces with her 5-inch guns. After the end of Japanese resistance on 7 February, she patrolled the Marshall Island area until late March. During April, she acted as escort for ships bringing troops and supplies during the assault of Hollandia.