Why does Crazy Old Friedrich prefer to spend time with Topthorn and Joey, instead of the other soldiers? In war horse.Please quick. Thx

Crazy Old Friedrich is so called by the German soldiers because he talks to himself, but he tells Joey that he talks to himself because nobody else understands him. He feels that he is the only sane person in the platoon because he does not want to be at war. Friedrich sees how futile the fighting is and that the soldiers are being manipulated into nonsensical hostilities; all he wants is to go back to everyday life in Germany as Butcher Friedrich. He is very loving towards Topthorn, and they develop a strong bond.