I agree TW&T would also be a good rule set for Solo.? So would IABSM!, AoF, and FOW for that matter.
Am trying the Campaign to provide the flavor.? First scenario is an ambush of a simulated (since only a platoon is carried) troop train of Panzergrenadiers by Soviet partisans, at night.? It was the night rules (one scenario book suggests limiting spotting to 12" for night rules) and what does my opponent do that was the question.
NUTS has a NPC offensive and defensive table to randomly determine the NPC actions.
Michael Reese