well the Soviets.. first pic up ..colours blocked in , tunics flesh helmets and tracks then two thin sprays of Vallejo sepia tone.., one of my versions of the "Wash" method..
Then the reset , , a black wash over the running gear, a bit of black wash to outline grilles and hatches periscopes and whatever needs a bit of definition a spay of the lower areas with Tamiya earth then a light dusting of the upper areas with the same..then a highlight with Tamiya buff of the running gear and lower areas to show the dried mud/dust . and a light dusting again of the upper areas ..then a coat of Matte varnish by hand and a final spray of Gunze Flat clear to "pull it all together". The varnishing both protects the model and evens out the weathering, which, without varnishing , can be a bit stark and ugly.. and then the nice bases..