OSAN AIR BASE, South Korea — A midnight curfew is now in effect for the sole U.S. Army infantry division in South Korea. A 2nd Infantry Division policy memo published Tuesday says soldiers are required to be on base, at a residence or inside a hotel room by the new deadline, instead of the U.S. Forces Korea standard of 1 a.m. followed until Monday. The curfew, which officials called a “readiness recall,” still ends at 5 a.m. 2ID did not identify any specific incident that sparked the change to the policy, but said readiness of the unit’s 12,000 troops was...