Ok I wrote the first part of my story

Arthas and his great undead legion had marched for an hour through the pouring rain, mud, and more insects than he knew existed. His ranks now numbered in the thousands. He had raided a troll village and had his necromancers raise the bones of the dead trolls. But now he was where he wanted to be; on a hill overlooking the walled city of StormWind. A “shade� had been sent into the city to find the city's weaker points. When the shade returned Arthas halted his army and listened, “Sir there is a sewer on the far side of the city that leads strait to a mausoleum and a rather large grave yard. If we are able to sneak a necromancer into the city we can create a diversion to give our forces time to scale the walls… How ever there is one problem; you can not see it but there is a large force of paladins and knights on the other side of the city. There are about 100 tents but if we attack at night we might be able to slaughter and raise the majority of them.�
“Good very good!� Arthas said with an icy grin.

Too be continued...

its a pretty good story. and there is just 1 thing... sins when dos a shade tell arthas what to do.