The figures were primed with black acrylic gesso applied with a brush. I find this the quickest way to prime and undercoat because there is no set up, no smell and the paint dries quickly.
If you look closely, there are spots where the paint is missing. These were touched up. I primed 32 figures in as many minutes.
This photograph was adjusted in Photoshop to emphasise the mid tones so that it does not look like a black blob.

After priming, all of the figures were damp brushed (overbrushed) with white gesso. this make it much easier to see the features and also acts as a white undercoat to the highlights.

Soldiers from pre 1700 periods often look best with random colours of apparel. I have found that the best way to create the effect of random is to be very structured.
I sorted the figures into rows. The pikemen come in packs of 8, so I placed these as a row. Then came the next pose of 8 pikemen.
The other figures were packs of 4 so they went in front. Soon I had 4 rows of 8.
I then spaced them out so that I had 8 columns of 4. If each column of 4 has a colour scheme, then no two poses have the same colour scheme.
I took a column and painted some parts of the clothing on 4 figures with deep red.

Then I took another column and painted some parts of the clothing on 4 figures with bright green.

Here is the same picture straight from the camera, before cropping and white balance.
