 Heavy fighting occurred around The Hook, which was by then held by the US 2nd Infantry Division following the relief of the 1st Commonwealth Division, the Old Baldy and Pork Chop Hill features held by the US 7th Division and in the western sector held by the US 1st Marine Division around the Vegas and Nevada Complex.Peace talks finally resumed at Panmunjom on 6 April and an agreement was soon made to exchange sick and wounded prisoners.Consequently, 648 UN and 6,670 PVA and North Korean prisoners were subsequently repatriated as part of Operation Little Switch on 20 April, including five Australians For a while the tempo of operations slackened, returning to the small-scale raids and probes of the winter months.