Here is the second set of Bush War FUBAR that I've modified for my own games. I prefer a little more abstraction in combat with less math so my mod reflects this. I listed Craig and the FOW Group as original writers, along with citing Shawn Carpenter of Ambush Alley, with myself as the mod developer.
Again I took some mechanics from another game I like (Ambush Alley) and merged them with the great FUBAR system while incorporating some concepts from Ultra FUBAR. I have wrote the mod with small game tables in mind, 2'x2' as an example therefore no range limits on almost all weapons. In this mod I have replaced the values of expertise with a die type, i.e. Green = d6, Seasoned = d8. A 4+ die result being the universal mechanic. Optimal range that adds another die to your attack roll is still there. Your saves can still be compared to hits, to me adds a further sense of combat.
Also my upcoming "Witchhunter" and "Steampunk" mods will be based on these rules.
Thanks for looking.