I would be grateful if someone could explain the CR10 please. I have the document for my gr grandfather Jno Wm Herbron Gallagher (John William Harbron Gallagher), North Shields, Northumberland dob 27/12/18996. It has a photgraph of him and next to the photo is the vessel No: 129772 09/01/1919. I have researched the vessel as "Tynesider" and I assume that the date is the date he enlisted on this vessel. However, as there is only 1 named vessel does this mean that he only served in the Merchant navy on one vessel (I know he didnt pass away until 1961).

I am somewhat confused as he married in 1916 and on his marriage certificate his occupation is stated as Soldier, however I have a copy of the CR10 09/01/1919 and then a WW1 Medail Rolls General Service Medical in 1923.

I cant work out which service he would have been in after the war which means I cant try and trace his service because I dont know who to contact. As it stands I have the following:
1916 - Soldier on Marriage Certificate
09/01/1919 - on a vessel with CR10 then
1923 - General Service Award - Northumberland Fusiliers 2nd Battalion
1961 - Death Certifificate states "Mariner"

Can you help?