I am a tad confused here. If one looks at the unit description file, here's what you get for climate effects for bedouin warriors:

heat: -2 (what??? aren't bedouins desert warriors, so the effect of heat should be positive)
scrub: 0
forest: 2 (what??? aren't bedouins cavalry, so they should suffer in forest)
sand: -6 (what??? same comment as for heat)
snow: -2 (ok)

if one looks at these files closer, there are other surprises there: like, barbarian mercenaries getting a hit in the forest; basically, all african cavalry taking a combat hit in heat while armored legionnary cavalry is actually getting a bonus (+4); light auxillia not getting any bonus versus cavalry and camels (while they get +6 versus chariots and elephants...).

looking at these stats and comparing them to unit description makes me wonder whether they are not messed up in this version of RTW. or did i do something wrong?