They all appear enlsted, or wearing an enlisted uniform. The one in the center definatily is wearing the M1899 enlisted Kahki Uniform, as do most all in the previous pictures. The outer two appear to be wearing wool, and could be the later M1912 wool drab uniform. However, they both have roll collars, which the 1912 did NOT have, so i'm a bit puzzled. They look like M1899s made up in drab wool. (which was what the M1912 really was, but with a standing military collar instead of the rolled collar on the enlisted version.) They're all wearing the 1904 russet belts, and the sabre handles date later as well. I'd put them around 1912/13 perhaps.