How much do the Damage per troop type researches give in Dragonfire?

In the War Tactics tree, the {Cavalry/Archers/Spearmen/Shields} Damage researches boost the attack of the matching troop type:

• {Type} Damage I: +0.8% per level (level 5 = +4%).
• {Type} Damage II: +1.2% per level (level 1 = +1.2%).

Same logic on defence: {Type} Defence I cuts the damage you take by −0.8% per level.

⚠️ These percentages are small in the early game. In a real early-game fight from one of our reference accounts, Spearmen Damage was only worth +5.2% — comparable to the ±7% matchup, and far below the +20% affinity or the auras at −27.5%. In the late game (stacked levels plus the seasonal layer) that same bonus climbs into the hundreds of percent and dwarfs everything else.

➡️ Concentrate this research on the ONE type you field most.