Looks like a pretty good build and the posing of the figures makes a nice focal point. Also, very nice map.
A few suggestions on the figures since they do become the focal point:
Add a black wash to the edges of the shirt collars, ties, lapels, etc. then mix some lighter base color and lightly drybrush the raised edges.
In the first picture, see how the shadows fall on the kneeling guy? Then look at the front of the jacket on the guy holding the map in the third picture. You loose all the depth. You want to simulate the real shadows on the back of the keeling guy in the first picture to all edges of clothing.
Since they are all wearing the same color uniform, to spice things up, use very slightly different base colors to show differing wear, age and die lots.
Be careful to paint hair all the way to the edge, the kneeling guy has some hair painted flesh at his left temple. Also, add some highlights to the hair, esprecially where light would be falling directly down on it. This is the one place on a figure where a LITTLE sheen would not be completely out of place.
On this guy's shoes, paint the bottoms a mid to light brown on the heels and front half to show worn leather and a darker brown from the heel to where the sole would make contact with the ground.
Looks like you used a commercial flesh color which produces a very monotone and rarely realistic color. Try mixing your own with burnt sienna and white, either acrylic or oils and try to get a bit more highlight and shading. I know of no figure painters who use commercial flesh.
Finally, be sure to give tehm a good heavy spray of dullcoat or other clear flat to eliminate any glossiness.