By dint of diplomacy and bribery, I have as Spain just made vassals of Lorraine and The Palatinat. Now the manual states that if I get involved in a bit of a ruck ,they have to aid me. But Lorraine has vassalised Wurtemburg and The Palatinat likewise with Saxony. So my vassals will aid me but are their vassals also obliged to get involved in the case of war? that is do they owe me any loyalty in their own right? I realise the end result is likely to be the same eg: if France attacks me, then my vassals will have to aid me, THEIR vassals will be obliged to aid THEM and so we will all end up fighting France, or am i misjudging the situation?