Unknown Soldier

More from the same bands

Slayer- Seasons in the Abyss
Slayer- South of Heaven
Metallica- Ride the Lightning
Metallica- ...and Justice For All
Sepultura- Beneath the Remains
Anacrusis- Screams and Whispers
Testament- The New Order
Sodom- Agent Orange
Overkill- Horrorscope

Now surely along with what has been suggested this is enough!

Bear in mind all the groups mentioned are fairly old and some of their other releases have evolved out of thrash into other types of metal.

I would like to recommend some modern day thrash groups but imo all that I`ve heard are pretty weak.