From Total War: WARHAMMER Wiki
Infantry, mounted units and other types of unit may bear different types of weapons in battle, each type being suited to different purposes. Detailed information about the combat strengths of a selected unit can be found on the Unit Details panel.
- Swords, axes and maces are general-purpose melee weapons, being particularly effective against spearmen.
- Spears are most effective against larger targets like mounted units, and can be braced to negate a charge.
- Armor piercing weapons have special damage values that ignore armor. It is to be noted that these weapons typically fire slower, so they are less than suitable for engaging swarming infantry.
- Some units deal magical damage (like hexwraiths). This damage can ignore most effects, especially magical resistances, like ethereality.