On 3 June, "Tuscaloosa" steamed in company with the rest of Task Force 125 (TF 125) bound for the Normandy beaches. At 0550, 6 June, she opened fire with her battery, and three minutes later her guns engaged Fort Ile de Tatihou, Baie de la Seine. For the remainder of D-Day, coast defense batteries, artillery positions, troop concentrations, and motor transport all came under the fire of "Tuscaloosa"s guns, which were aided by her air spotters and by fire control parties attached to Army units on shore. VOS-7, a US Navy Spotter Squadron flying Supermarine Spitfire VBs and Seafire IIIs, was one of the units which provided targeting coordinates and fire control. Initial enemy return fire was inaccurate, but it improved enough by the middle of the day to force the cruiser to take evasive action.