- 1 s ▁over ▁the ▁North ▁Sea , ▁resulting ▁in ▁another ▁re deploy ment ▁for ▁ 1 ▁AA ▁Group , ▁this ▁time ▁to ▁the ▁east ▁of ▁London . ▁New ▁H AA ▁sites ▁had ▁to ▁be ▁quickly ▁established , ▁with ▁new ▁P ile ▁Platform s ' ▁being ▁built ▁and ▁thousands ▁of ▁h uts ▁moved ▁and ▁re - ere cted ▁to ▁shelter ▁the ▁cre ws ▁as ▁winter ▁approached . ▁During ▁this ▁phase ▁of ▁Operation ▁D iver ▁there ▁were ▁over ▁ 2 , 6 0 0 ▁light ▁and ▁heavy ▁AA ▁guns ▁along ▁the ▁coast ▁of ▁East ▁Ang lia ▁between ▁New h aven ▁and ▁De al , ▁the ▁" D iver ▁B elt ", ▁and ▁ 8 5 0 ▁to ▁the ▁east ▁of ▁London ▁in ▁the ▁" D iver ▁Box ". ▁ 2 8 ▁AA ▁B de ▁was ▁part ▁of ▁the ▁latter ▁group . ▁The ▁Germ ans ▁respond ed ▁by ▁launch ing ▁V 1 s ▁from ▁further ▁to ▁the ▁north , ▁in ▁order ▁to ▁by pass ▁the ▁D iver ▁def ences . ▁AA ▁Command ▁hurried ly ▁set ▁up ▁the ▁" D iver ▁St rip " ▁between ▁Cla ct on ▁and ▁Great ▁Y arm outh , ▁and ▁formed ▁a ▁new ▁ 9 ▁AA ▁Group ▁to ▁take ▁over ▁the ▁D iver ▁def ences ▁in ▁East ▁Ang lia . ▁ 2 8 ▁AA ▁B de ▁moved ▁to ▁this ▁new ▁formation ▁in ▁December ▁ 1 9 4 4 , ▁giving ▁up ▁its ▁previous ▁units ▁and ▁taking ▁over ▁fresh ▁ones . ▁The ▁establishment ▁of ▁the ▁D iver ▁St rip ▁included ▁the ▁establishment