Bognor Regis once part of the Mulberry floating harbours used by the Allies to invade the French coast on D-Day 6 June 1944. It was a part of the Mulberry harbour which broke free in a storm on 4 June, the day before it was due to go over the channel to Arromanche. This particular section of Mulberry was abandoned and did not make it across the Channel. It was washed up on the beach shortly after D-Day. It is clearly visible at low tide throughout the year. There are a number of Mulberry Harbour relics just off the coast of Pagham
Australian contribution to the Battle of Normandy (EATS), were stationed in the United Kingdom (UK) and took part in operations against Germany. The Australian Government had very little influence over where Australian graduates of EATS were posted, and many were assigned directly to British units. As of 6 June 1944, 1,816 Australian airmen (including 584 pilots) were posted to RAF squadrons. Many of the thousands of Australian ground crew in the UK at this time were also serving with RAF units. In addition, ten RAAF flying squadrons were stationed in the UK. These included one regular RAAF unit, No. 10 Squadron, and nine temporary "Article XV squadrons,"