I have tried searching the catalogue of The National Archives for the war diary reference of 129 Battery 220 Searchlight Training Regiment RA,using several variations but each have drawn a blank. I was wondering whether it was actually a sub-unit and therefore I need to be looking for the parent unit's war diary - any pointers would be welcome. I do know that the unit was stationed at Houndstone Camp, Yeovil during early 1941 as my grandad was posted there when he was called up.