74664 Corporal Sidney Herbert Blackmore - Royal Engineers

[Mangoman]

I have just come across this postcard of the grave of my grandfather's uncle who died at Lemnos Military Hospital and was later interred at Portianos Military Hospital. My question is, bearing in mind the standard wooden battlefield crosses, who would have gone to the extent of making this more elaborate cross for his grave? Would it have been family or soldiers of his Company?