Second Army then made preparations to cross the Rhine in Operation Plunder. 15th (Scottish) Division was tasked with making the initial assault crossing on XII Corps' front (Operation Torchlight). The vast build-up of forces, ammunition and supply dumps was a major AA defence task. Defending the bridgeheads after the crossing was another vital task, so getting AA units across early was crucial. 119th LAA Rgt practised loading SP Bofors guns onto Class 9 rafts, which 15th (Kent) GHQ Troops Royal Engineers would operate until Bailey bridges could be erected across the wide river. Other gunners and equipment would cross in Buffaloes. While the assault was going on, the regiment was organised with three Trps (and 9 attached guns of 108th LAA Rgt from 52nd (Lowland) Infantry Division, the follow-up division) taking part in pepperpot bombardments of the far bank, one and a half Trps to give directional fire for the various craft crossing the river in darkness, and the remaining one and a half Trps giving AA cover to the medium and heavy guns of 3rd Army Group Royal Artillery. The guns moved into concealed positions on 22 and 23 March. When the operation was launched on the night of 23/4 March the regiment fired 1347 rounds in the pepperpots, and their red tracer was prominent when 15th (Scottish) Division's infantry set off across the river in stormboats and Buffaloes at 02.00. The infantry soon gained a footing for the bridgehead. The Sappers then began rafting across guns and vehicles, with LAA guns given a high priority. It was not until after dark on 24 March that small numbers of  Luftwaffe aircraft appeared, making dive-bombing attacks from medium and low altitude, which were countered by searchlights and LAA guns. On 25 March 119th LAA Rgt sent C, E and G Trps (without guns or vehicles) across in Buffaloes to act as infantry to protect the bridgebuildig operations from any stray enemy hiding in the adjacent woods. Over the next two nights the number of air raids increased but the first bridges were operational on 25 March and the follow-up divisions began crossing. By now the raiders were forced to bomb from greater heights by the radar-controlled LAA barrages they faced. On 28 March a few fighter-bombers were seen by daylight in XII Corps' area, but thereafter the Rhine crossings remained quiet as the Luftwaffe had to fall back ahead of Second Army's advance. During 27 March the rest of the regiment, HQs and transport crossed the river, and next day E and G Trps were engaged in heavy ground firing in support of attacks by 44th (H) and 227th (H) Bdes, targets including a church tower that could have been used as an enemy OP. On 29 March the division was relieved and 119th LAA Rgt 'harboured' in the Bislicher Wald near Hamminkeln.