Mongols - Improved Elite Army Tactics & Improved Biology - Researching the Improved versions of "Elite Army Tactics" or "Biology" after already having the normal version, gives you +32% HP & +32% DMG instead of +30% HP & +30% DMG

Age of Empires IV IV - Report a Bug
1

For Mongols, the Improved versions of “Elite Army Tactics” and “Biology” give +30% HP & +30% Damage. However, if you research the regular version first, and then later research the improved version, you end up with +32% HP & +32% Damage.

This means that the “+10%” from the Improved version is being multiplied, instead of added, to the regular “+20%”, since 120% * 110% = 132%.

[Elite Army Tactics] Example with researching Improved version first:

  1. Imperial Elite Spearman has 130 HP.
  2. Imperial Elite Spearman has 11 Damage.
  3. Research “Improved Elite Army Tactics”.
  4. Imperial Elite Spearman now has 169 (+39) HP. (130 * 130% = 169)
  5. Imperial Elite Spearman now has 14 (+3) Damage. (11 * 130% = 14.3 which rounds to 14)

[Elite Army Tactics] Example with researching Regular version first, then the Improved version after:

  1. Imperial Elite Spearman has 130 HP.
  2. Imperial Elite Spearman has 11 Damage.
  3. Research “Elite Army Tactics”.
  4. Imperial Elite Spearman now has 156 (+26) HP. (130 * 120% = 156)
  5. Imperial Elite Spearman now has 13 (+2) Damage. (11 * 120% = 13.2 which rounds to 13)
  6. Research “Improved Elite Army Tactics”.
  7. Imperial Elite Spearman now has 172 (+42) HP. (130 * 120% * 110% = 171.6 which rounds to 172)
  8. Imperial Elite Spearman now has 15 (+4) Damage. (11 * 120% * 110% = 14.52 which rounds to 15)
  9. Both HP and Damage have +32%! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[Biology] Example with researching Improved version first:

  1. Imperial Elite Horseman has 180 HP.
  2. Research “Improved Biology”.
  3. Imperial Elite Horseman now has 234 (+54) HP. (180 * 130% = 234)

[Biology] Example with researching Regular version first, then the Improved version after:

  1. Imperial Elite Horseman has 180 HP.
  2. Research “Biology”.
  3. Imperial Elite Horseman now has 216 (+36) HP. (180 * 120% = 216)
  4. Research “Improved Biology”.
  5. Imperial Elite Horseman now has 238 (+58) HP. (180 * 120% * 110% = 180 * 132% = 237.6)
  6. HP has +32%! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This currently affects “Elite Army Tactics” and “Biology”, and does not affect “Siege Works”.

Build: 11.1.1201