Bear in mind that my XML experience is not in Warlords, but I don't think this part changed.
Also, step by step from my work computer might be confusing, but here goes....
1 - In the Mods folder I would make a folder named "Test" or something.
2 - In Test make an Assets folder
3 - In Assets make an XML folder
4 - In XMl make a Units folder
5 - Go back and find the Civ4/Assets/XML/Units folder (main files) and locate the Civ4UnitInfos.xml file. Make a copy.
6 - Take the copy to Civ4/Mod/Test/Assets/XML/Units and drop it in.
7 - Open this file with XML Marker (Google it, it's free!) or Wordpad or another XML editor.
8 - Find the Berserker and search for the <iCombat>X</iCombat> tag. Change the X to whatever number you want. Save (remember this is now your mod so saving is fine).
9 - Load up Civ4, select Advanced, Load a Mod, select Test and wait for it to load. Your Berserker should now have a higher attack.
For promotions I'll wait to see how this part goes.
