My son the Russian Infantry Painter -- par excellance -- paints em this way.
Spray paint with black primer (sandable automotive primer).
Then kind of dry brushes / highlights with Vallejo Off White. This is kind of hard to describe as he isn't exactly dry brushing here but hitting the high points of the figure.
Then he mixes Vallejo Khaki with off White. At about a 3:1 to 3:2 ratio and slap dashes the entire figure. This is way lighter than the color you want but . . . wait.
Next he paints the flesh areas with a Vallejo flesh tone mixed with off white -- about 3:1 ratio.
He will also paint any hair around this time in a lighter red – brown color.
Then he hits the entire figure with a brown ink wash. It looks to me like about 1 part ink to 3 parts water (he's not too precise here but mixes water and ink to get the desired effect). This is enough for the ink to settle and darken recessed areas on the face and in between the fingers. The ink wash also darkens the Khaki and sinks into the recesses to bring out the quilting.
At this point you are on your own painting up the equipment and such.
At the end of things he will dry brush / highlight with a lighter flesh tone over the face and hands.
Like wise he will highlight the Khaki covered areas to suit his fancy.
Takes him less than a week to knock out 100+ Russian Infantry for his "hordes". I sure can't paint them this fast but . . . (yeah I know more excuses huh?).
Hope this helps.
mjc