On 27 June , RHQ moved to Loucelles , where I Trp of 399 LAA Bty took over AA defence .
The regiment was assigned to support 15th ( Scottish ) Division during Operation Epsom .
On 27 June , RHQ moved to Loucelles , where I Trp of 399 LAA Bty took over AA defence , and the regiment was assigned to support 15th ( Scottish ) Division during Operation Epsom .