During World War II the Kingswood buildings were requisitioned by the government and used by the Admiralty for military planning purposes. The school was evacuated to Uppingham School in the East Midlands and continued to function there. The Mulberry harbours used on D-day for the landing on the Normandy beaches were designed at the school and for many years it was thought that they were named after the Mulberry tree that still exists outside the front of the school, whereas Mulberry was simply the next code word on a list. The Moulton Hall was named after ex-pupil Lord Moulton but was remodelled as a library/learning resources area in 2006, and is now called the J O Heap library following a generous bequest from another ex-pupil. During World War II the younger boys were moved to Prior's Court, an estate owned by Colonel Gerald Palmer, MP for Winchester. After the war the estate was purchased from Colonel Palmer and run as a Preparatory School until it was sold in 1997. A small number of boys (around six) started in the Junior house (Westwood) before the war, moved to Prior's Court on the outbreak of war, on to Uppingham and finally back to Kingswood at the war's end. In memory of the event a stone was taken from the Kingswood library, engraved and set in the Uppingham buildings. An Uppingham stone was likewise sent to Kingswood and incorporated in the library wall. The inscriptions on the stones are shown in the accompanying boxes.