Use aggressive stance for similar troop counts.

Bumps the breakthrough requirement to 2x, elimination to 1.5x, and uses
agressive for 0.8-1.5x.

game/commander/tasks/compound/destroyenemygroundunits.py

@@ -1,6 +1,7 @@
 from collections import Iterator
 from dataclasses import dataclass
 
+from game.commander.tasks.primitive.aggressiveattack import AggressiveAttack
 from game.commander.tasks.primitive.cas import PlanCas
 from game.commander.tasks.primitive.eliminationattack import EliminationAttack
 from game.commander.theaterstate import TheaterState
@@ -14,4 +15,5 @@ class DestroyEnemyGroundUnits(CompoundTask[TheaterState]):
 
     def each_valid_method(self, state: TheaterState) -> Iterator[Method[TheaterState]]:
         yield [EliminationAttack(self.front_line, state.player)]
+        yield [AggressiveAttack(self.front_line, state.player)]
         yield [PlanCas(self.front_line)]

game/commander/tasks/primitive/aggressiveattack.py

@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+from game.commander.tasks.frontlinestancetask import FrontLineStanceTask
+from gen.ground_forces.combat_stance import CombatStance
+
+
+class AggressiveAttack(FrontLineStanceTask):
+    @property
+    def stance(self) -> CombatStance:
+        return CombatStance.AGGRESSIVE
+
+    @property
+    def have_sufficient_front_line_advantage(self) -> bool:
+        return self.ground_force_balance >= 0.8

game/commander/tasks/primitive/breakthroughattack.py

@@ -15,7 +15,7 @@ class BreakthroughAttack(FrontLineStanceTask):
 
     @property
     def have_sufficient_front_line_advantage(self) -> bool:
-        return self.ground_force_balance >= 1.2
+        return self.ground_force_balance >= 2.0
 
     @property
     def opposing_garrisons_eliminated(self) -> bool:

game/commander/tasks/primitive/eliminationattack.py

@@ -11,4 +11,4 @@ class EliminationAttack(FrontLineStanceTask):
 
     @property
     def have_sufficient_front_line_advantage(self) -> bool:
-        return self.ground_force_balance >= 1.0
+        return self.ground_force_balance >= 1.5