Leddy: Other folks may go with a homemade creation, but I like either the Ammo Mig mud products or those available from www.thescenicfactory.com. Both offer an Eastern Front mud that you would find realistic. Given both choices, I personally prefer John's Kursk dry and wet
mud options at The Scenic Factory...go to YouTube and search for his hour long video on creating a muddy, snowy dio; he explains the mud options and how to apply them. He is a true artist....good luck with your dio. Be sure to post some pics!