In early November, Allied forces learned that the Japanese were preparing again to try to capture Henderson Field. Therefore, the U.S. sent Task Force 67, a convoy carrying Marines, two U.S. Army infantry battalions, and ammunition and food to Guadalcanal on 11 November. The supply ships were protected by two task groups, commanded by Rear Admirals Daniel J. Callaghan and Norman Scott, and aircraft from Henderson Field. The ships were attacked several times on 11 and 12 November by Japanese aircraft but most were unloaded without serious damage.