The mission of V Corps was to secure a beachhead in the area between Port-en-Bessin and the Vire River... The Corps would arrive at the beachhead in four stages. The initial assault force (Force "O") consisted of the 1st Division... Chief components of the 1st Division were its own 16th and 18th Regimental Combat Teams, the 116th Regimental Combat Team and the 115th Infantry attached from the 29th Division, and the Provisional Ranger Force of two battalions (2d Ranger Battalion and 5th Ranger Battalion). Force "O" numbered 34,142 men and 3,306 vehicles.
The follow-up force (Force "B") was scheduled to arrive off the assault beach after noon on D-day and numbered 25,117 men and 4,429 vehicles. It included the 29th Division, consisting of the 175th Infantry and (attached from the 1st Division) the 26th RCT. Scheduled to arrive on D+1 and D+2, the preloaded build-up contingent had as main component the 2d Division and totaled some 17,500 men and 2,300 vehicles. Schedules for the later build-up completing the transfer of V Corps to Normandy, called for the arrival between D+2 and D+15 of 27 residual groups involving 32,000 troops and 9,446 vehicles...
The loading plans of Force "O" and Force "B" were designed to fit an operation which would develop from an assault by one reinforced division into attack by two divisions abreast. Unity of command in the critical first stages would thus be assured. Major General Clarence R. Huebner, commanding the 1st Division, would conduct the initial assault with a force that included two units of the 29th Division, and plans for the landings and for movement inland were made so as to permit the early assignment of divisional zones to the 1st and 29th Divisions. These zones would go into effect on corps order, when Major General Charles H. Gerhardt would assume command of the 29th Division with its normal components. In the meantime, in order to pave the way for this step, Brigadier General Norman D. Cota, assistant divisional commander of the 29th, was to land with the 116th RCT and assist General Huebner in handling the 29th Division units until they reverted...
Air and naval bombardment was designed to soften up the beach defenses; the main job of reducing them and breaking through inland would have to be done by the assault landing teams...
The 1st Division planned an attack by two regiments abreast. On the two easterly sub-sectors (Easy Red and Fox Green), totaling about 3,000 yards, the 16th RCT would assault with two battalion landing teams abreast, one on each sub-sector; the support Battalion would touchdown on Easy Red at H+70 minutes. On the four western subsectors (Dog Green, Dog White, Dog Red, and Easy Green), totaling about 3,000 yards, the 116th RCT would likewise assault with two Battalion's abreast, the support battalion coming in on the three eastern subsectors.
The Provisional Ranger Force of two battalions, attached to the 116th RCT, had special missions on the right flank. Three companies of the 2d Ranger Battalion were to scale the cliffs at Pointe du Hoc, three miles west of the main landings, and take the fortified battery positions. One company of the same unit would land just west of the 116th near Exit D-1 and assault the enemy positions at Pointe de la Percee. If the assault at Pointe du Hoc was successful by H+30 minutes, the 5th Ranger Battalion and the remaining companies of the 2d Battalion would land there; if not, they would come in on Dog Green at H+70 and proceed overland for attack on Pointe du Hoe.
(Omaha Beachhead )