South Korean and U.S. Marines held a joint maritime infiltration drill near the South's border island on Tuesday as part of efforts to boost joint combat readiness and interoperability, Yonhap reported quoting the Marine Corps as saying Tuesday.
Some 200 South Korean Marines and some 20 American service personnel stationed in Okinawa, Japan, participated in the exercise in waters off Ganghwa Island in the Yellow Sea, where they sneaked into virtual camps of enemies, attacked targets and escaped from the sites, according to the Marine Corps.