POTEL John Hartley Sharples – Update

I have received a request from the family of Petty Officer Telegraphist John Hartley Sharples who was sadly killed during WWII in August 1944. Many of our mature members may have served with John. The family are seeking any information at all. If you remember John, please email me frankandlaurie@gmail.com or leave a comment to this post.
Further research has been conducted with the following results:
John joined the New Zealand Division of the Royal Navy on 8 May 1935 as a Telegraphist. Note that the New Zealand Navy did not come into being until 1 Oct 1941. Whilst in New Zealand he was posted to HMS LEANDER, PHILOMEL, WAKAKURA and looks like he reverted back to Royal Navy service on 30 January 1941, It appears he was on loan from the Royal Navy so not sure when he joined that service. His Loan agreement expired on 29 April 1940. His birth date was given as 8 August 1916 but no place of birth is provided. His rank on leaving NZ was Leading Telegraphist but obviously he was promoted to Petty Officer Telegraphist after he returned to the UK.
The Commonwealth Graves Commission provides the following detail
Name:SHARPLES, JOHN HARTLEY
Initials:J H
Nationality:United Kingdom
Rank:Petty Officer Telegraphist
Regiment/Service:Royal Navy
Unit Text:H.M.S. Dundonald II.
Date of Death:29/08/1944
Service No:D/JX 136338
Casualty Type:Commonwealth War Dead
Grave/Memorial Reference:II, C, 20.
Cemetery:CASERTA WAR CEMETERY
It is apparent from the CWGC record above that John Sharples was posted to HMS DUNDONALD II. Here is some information on this establishment.
HMS Dundonald II
Function – Combined Signals School (CSS) for the RN, RAF and Army also training of RN Beach Signals Sections.
Address and commissioning history – H.M.S. Dundonald 2, Auchingate, Troon, Ayrshire, Scotland. Commissioned on 1/4/42 and closed on 6/6/46.
Other information – The CSS was formed at Inveraray, Argyll on the 1st Nov 1941 as part of the No I Combined Training Centre – HMS Quebec. It was the brainchild of Mountbatten and, in common with all other training programmes, was designed to meet a specific need. The CSS was an early example of a Combined training school. The first Director was Commander L.C. Skinner, R.N. Initially joint control was vested in a Lt. Col. of the Royal Signals, an RAF Wing Commander RAF and a Major Royal Marines with a unified command structure.
Signalling procedures were developed, taught and put into practice in communications training exercises to and from landing craft. The school was also responsible for experimentation and training in early forms of navigational aids using radio and other devices. These were designed to assist small landing craft find their way to designated landing places on hostile beaches. In 1942 the school moved to Troon (HMS Dundonald 2) and the training centre there was treated to the unusual sight of men from all services parading together and reporting to a Signals Duty Officer who could be from any of the three!
Another record shows JH Sharples died in the 2nd General Hospital, Caserta and thus the reason he was buried in Italy.  He was obviously on Combined Operations at the time as he is on the Combined Operations Roll of Honour. see http://www.combinedops.com/COM_THEY_ALSO_SERVED.htm