Established in early 1941 as at B-18 Bolo medium reconnaissance squadron. After the Pearl Harbor Attack, flew antisubmarine missions over the southeast Atlantic coast. Deployed to the Southwest Pacific in February 1942, flying A-20 Havoc and B-25 Mitchell medium bomberrs. Mission involved highly-dangerous skip bombings. During the Battle of the Bismarck Sea, engaged in the first sea-level attack by B-25 strafers in World War II and demonstrated that this tactic was extremely effective. The squadron also participated in the raids on Wewak, New Guinea, which were preemptive strikes that virtually ended the threat of enemy offensive air capabilities.