Which preposition to use with syces

with Occurrences 3%

The bearer was there with all the luggage, and the syces with the ponies, for we are taking the ponies in case there is a chance of polo.

at Occurrences 2%

But this time he rode along the edge of the stand, since on this side the ponies waited with their blankets thrown over their saddles and the syces at their heads.

for Occurrences 1%

There were half a dozen horsesno, sevenseven horses tethered apart from each other, and not a syce for any one of them.

from Occurrences 1%

... A native syce from the Artillery lines led my charger into the little compound of my tiny bungalow.

Which preposition to use with  syces