After the Fall of France and the BEF's evacuation from Dunkirk, returning AA units were re-equipped and re-integrated into AA Command as quickly as possible. By the summer of 1940, all TA searchlight regiments had been transferred to the Royal Artillery (RA), and AA regiments had been redesignated Heavy Anti-Aircraft (HAA) to distinguish them from the new Light Anti-Aircraft (LAA) regiments being formed.