I am looking for records of my grandfather Frank Milsom, WW1, Duke of Cornwall Regiment, no. 35657, then the Wiltshire Regiment, 0682. I have found these records on Ancrestry but believe other records to have been burnt in the fire of WW2.

He was on the Transylvania when it went down in May 1917 but survived and was in Savona until May 10 1917 then returned to Mareseille. Does anyone know the ship from Savona to Marseille? Where did he go from here, possibly Alexandria or elsewhere in Egypt. What happened on the battlefield for the DDLI in Africa after May 1917, why would he have been tranferred to the Wiltshire Regiment.

Any information would be gratefully received.