The Hessians main goal for winning the war?

Money, they paid the Hessians to go to the war.

Another view: It is true that Hessian's were foreign troops in the service of England as paid Mrcenaries. They were not mandated to have political convictions that mirrored that of the British Empire. Not relevant at all in their case because they were a very Professional Army although they were conscripted. They maintained a loyalty to their German Lords who were paid for their services. They were not Soldiers of Fortune but men of honor who chose the camaraderie of arms and a brotherhood of blood.

Place them historically with the Vatican's Swiss Guard or the French Foreign Legion and not with a dream world of Soldier of Fortune Magazine.

but wait that makes no sense at all what about the animals that were involved

did you think about that