The division's next task was to assault Monte Camino, the last major feature before the Winter Line (or Gustav Line), which failed in mid-November with heavy losses, mainly to the 201st Guards Brigade, with Lyne himself being wounded on 13 November. Returning by early December, the division, with Lyne's brigade playing a major role, was supported by a very heavy artillery barrage and took part in the second attempt to capture Monte Camino, which was taken and the Germans finally thrown off the mountain. On 8 January 1944, however, Lyne returned to hospital and so missed the division's crossing of the Garigliano river during the first Battle of Monte Cassino. He returned again to the brigade on 21 January, as it captured the first peaks of the Aurunci Mountains.