just read a new article about this:
battle was fought between 190 and 260 ad.
romans were approximately 1000 men
roman force included scorpions or balistas and a lot of archers(syrian?)->syrian arrowheads and heads of larger bolts were found
roman force was retreating from a skirmish, germans cut of thier path over a bank, which the romans took under fire and thus could pass through(tho they lost at least a small part of baggage)-> horseshoes were found; if the germans would have won they would have taken the metall with them

It seems to be that the romans won the battle but eventually lost their army in the dense forests of germania because there is no roman report on it and they most probably would seen to US knowing of their victory^^