Assigned to Task Force 15 (TF 15), "Anderson" steamed as part of the escort force for the first major reinforcement convoy bound for Iceland, carrying an Army brigade to augment the Marines who had been there since July. The ships reached Reykjavík on the evening of 15 September after a passage enlivened by two "submarine" contacts in "Anderson"s vicinity: one summarily depth-charged by on 8 September, the other by on the 10th. Then, between 26 September and 3 October, "Anderson" escorted a convoy to Placentia Bay, Newfoundland.