Pair of 1902 chevrons?

[Uniforms of the Day]

This period is not my forte'. I just found this pair of, what I believe to be, pre-WWI chevrons. I was wondering A) were these for Infantry at the time they were used?

B) What was this rank called at that time?

Thank you for any assistance!

[OD-Blue-Top]

infantry, Regimental Quartermaster.

[Uniforms of the Day]

Thanks a bunch OD!