Following the Armistice on 11.11.1918 there were no hard and fast rules governing who should be commemorated on war memorials. Local committees drew up their own criteria and this link will take you to a helpful summary of what happened across the UK.
The St Andrews Church Halberton memorial plaque (pictured above) lists 28 casualties of the First World War. The plaque is protected and is listed on the National Heritage List for England. Within St Andrews Churchyard are the graves of four casualties of the First World War whose headstones are inspected, repaired and (if necessary) replaced by the Commonwealth War Graves Commission.
At Halberton Village Hall the memorial board (which is not protected) was unveiled on 14th December 1928 and lists 34 casualties.
Most casualties are named on both the plaque and memorial board, others are named on one of them. In total 35 individuals are named.
All the names are listed in the PDF document below along with further details about them and the memorials upon which their name appears. Where a monument is cared for by the Commonwealth War Graves Commission the link will take you to the record for that individual on the GWGC website.