53rd Searchlight Regiment was one of the regiments selected .
Searchlight Regiment did not revert to Searchlight Regiment 's original title , instead becoming 638th ( Royal Northumberland Fusiliers ) Regiment , Royal Artillery on 23 January 1945 .
53rd Searchlight Regiment was one of the regiments selected but it did not revert to its original title , instead becoming 638th ( Royal Northumberland Fusiliers ) Regiment , Royal Artillery on 23 January 1945 .