 Complete the following phrase:  The regiment supplied a cadre of experienced officers and men to 236th SL Training Rgt at Oswestry where it provided the basis for a new 532 SL Bty formed on 14 November 1940. This battery later joined a href87th20Searchlight20Regiment2C20Royal20Artillery87th SL Rgta. By early 1944, With the lower threat of attack by the weakened Luftwaffe, AA Command was being forced to release manpower for the planned invasion of Normandy 