I normel go W/E and use, For Great Justice! ->Backbreaker->Crushing Blow->Aftershoch.... that little combo deals alot of dmg which normel kills unless they have pro spirit, u miss or they have a monk firend next to them. in the last case jsut get an air ele to hit them in the middle and they will die.
as it gose for W/R i can't think of much skills of hand that would help, unless u apply poison to your hammer :P
For Great Justice!
Counter Blow
Irresistible Blow
Devastating Hammer {Elite}
Crushing Blow
Heavy Blow
Troll Unguent
Res signet
W/R is not a good choice for Hammer. The only really viable ranger skill for Warriors in GvG is Tigers Fury, and that isn't great. Tigers is also way too energy intensive to run on a hammer Warrior. Personally I don't usually put any secondary proffesion skills on hammer guys.
"for great justice" with backbreaker helps me out alot, means that i only need 5 swings to use it and then they are on the floor for 4 secounds being hit for Crushing blow - aftershock, and if they got no healing in that time or protection then they will mostlikey be dead and when it comes to casters they normel are