Stone has engraving on top, looks like a Scottish Castle? inside a circle, with the number 27 under it and an inscription that I think shows "The Royal Inniskilling Fusiliers"
3711627 Serjeant Above name
and
The Royal Inniskilling Fusiliers Below name
Cross between the above and the below
Now Blow Ye Bugles and Ye Banners Fly.
For Thus to Give
Is Not To Die