Sektor from the Age of Darkness podcast has a thread (above) about his Volgan regiment that he links to his Iron Warriors. There we also a number of other threads where people are developing Militia armies to support Legion forces.
In terms of models, it depends what you are after. Imperial Guard models are easy to find, easy to convert and look the part. If you want something more Geno Two-Five, Perrys miniatures (https://www.perry-miniatures.com
) offer some good Napoleonic or Seven Years War models if you want a more traditional uniform. You could also consider WW2 historical models, especially the plastics from Warlord Games (https://store.warlor...ons/bolt-action
). Warlord are also now selling Konflict '47, which despite being an awful game (like Bolt Action), has some good 'odd' pseudo-historical / sci-fi models. At the end of the day, think of a theme and shop around for bits to convert into what you want.
"Let us speak now of the death of kings..." - Richard II
Sons of Horus 131st Company "The Kingslayers" http://aus30k.com/30...itle=L-XVI-3752
"Better to reign in Hell then serve in Heaven!" - John Milton, Paradise Lost