The main campaign now bogged down during the winter of 1943/44. 46th RTR left 23rd Armoured Bde on 4 January 1944 and was attached to 1st Division, which was the British contribution to the Anzio landing (Operation Shingle). The division landed on 'Peter' Beach unopposed on 22 January and completed its unloading by the following morning. On 24 January it probed forward towards Albano. On 30 January 1st Division began its advance up the Via Anziate towards Campoleone, with 3rd Brigade accompanied by 46th RTR. At 15.15 1st Bn King's Shropshire Light Infantry (KSLI) on the right of the Via Anziate, 1st Bn Duke of Wellington's Regiment on its left, with B Sqn 46th RTR, began their advance, all went well to start with; the objectives were secured by 18.00 and the battalions consolidated. Next day, 2nd Bn Sherwood Foresters renewed the advance at 10.30 with C Sqn 46th RTR. Approaching a railway embarkment the infantry took heavy casualties from machine guns. Although they captured the embankment, it hindered the tanks, and the advance stalled. By the end of the two days 46th RTR had lost 11 Shermans. In the evening of 3 February the Germans began a series of counter-attacks to eliminate the Campoleone salient, and came close to cutting it off. In the afternoon of 4 February a reinforcing battalion, 1st Bn London Scottish was sent up with two squadrons of 46th RTR to keep open the Via Anziate. This 'most determined attack was successful', and the respite allowed 3rd Bde to be pulled back from the most dangerous positions. Faced by strong enemy forces, 1st Division had to prepare defences, with the battered 3rd Bde and 46th RTR in reserve.