Who were the nobles of the Middle Ages?

knights, and others

Explanation:

European nobility originated in the feudal/seignorial system that arose in Europe during the Middle Ages. Originally, knights or nobles were mounted warriors who swore allegiance to their sovereign and promised to fight for him in exchange for an allocation of land (usually together with serfs living thereon).Nobles were important in the middle ages because the nobles' place in society was essentially to function as middle-men between the peasants and the royal family. Nobles provided work, land, and protection to the peasants while providing funding, supplies, and military service to the king

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.