Thanks KnightErrant. Damn every time in that post I spelt Medieval 'Medival'.
Anyway.

Q10) What do the first two numbers mean at the start of this line?

52 unit_models/_Units/EN_Lmail_Hmail/templars_lod0.mesh 121

A10) They mean that the following string will have 52 characters in. So if you had the number 56 in front, the string would be something like

unit_models/_Units/EN_Lmail_Hmail/hospitallers_lod0.mesh 121