Irrigation Specialist with troops of the Agricultural Ministry on Urphalt 261; Western Prefecture, Yamdana System.
The 302nd Wasteland Reconnaissance Regiment is made up of numerous Company and Battalion level units which are mustered and trained at the local level before being assigned to the Regiment for off-planet deployment. While the Counties and Sub-Districts of Kalkovac supply the vast majority of this manpower, it is not uncommon to see governmental offices and even business entities provide units to the expeditions.
Unfortunately the details of this photo leave no clue as to this soldier's rank. Probably taken around the time of the Embassy Purge, 901 or early 902.
A Platoon then, 67. A Company is five Platoons, so 335. But then at the Company level you have the organizational addition of porters, stevedores, and radiation specialists, so really 351. You need to count them too.
A Battalion is 956 guys. A Brigade is four of those, but then add in engineers and mechanics, so an even 3890. That's at full strength.