▁ 7 5 th ▁AA ▁R gt ▁in ▁April ▁ 1 9 3 9 ▁ ▁H Q ▁at ▁S itting bourne ▁▁ 2 0 5 th ▁( K ent ) ▁B atter y ▁at ▁S itting bourne ▁( from ▁ 5 5 th ▁( K ent ) ▁AA ▁Regiment ) ▁▁ 2 3 4 th ▁( K ent ) ▁B atter y ▁at ▁De al ▁▁ 2 3 5 th ▁( K ent ) ▁B atter y ▁at ▁Marg ate ▁ ▁Early ▁War ▁O pport un ities ▁for ▁action ▁were ▁rare ▁during ▁the ▁Ph oney ▁War , ▁but ▁on ▁the ▁night ▁of ▁ 2 2 / 2 3 ▁November ▁ 1 9 3 9 ▁the ▁H AA ▁guns ▁of ▁ 2 8 ▁AA ▁B de ▁(" Th ames ▁South ") ▁combined ▁with ▁those ▁of ▁ 3 7 ▁A AB ▁on ▁the ▁other ▁bank ▁of ▁the ▁river ▁(" Th ames ▁North ") ▁to ▁eng age ▁at ▁least ▁two ▁German ▁mine - lay ing ▁aircraft ▁that ▁had ▁st rayed ▁into ▁the ▁mouth ▁of ▁the ▁est u ary . ▁One ▁w reck ed ▁aircraft ▁was ▁found ▁on ▁the ▁mar sh es ▁and ▁cred ited ▁to ▁ 2 0 6 ▁B atter y ▁of ▁ 5 8 th ▁H AA ▁Regiment , ▁based ▁at ▁All hall ows , ▁Kent . ▁ ▁During ▁the ▁summer ▁of ▁ 1 9 4 0 ▁the ▁brig ade ▁was ▁joined ▁by ▁ 5 3 rd ▁( City ▁of ▁London ) ▁H AA ▁Regiment , ▁which ▁had ▁been ▁ev acu ated ▁from ▁Marse