Destroyed by battle (Japanese:
Many effect requirements can be fulfilled when a monster is destroyed this way, an example being "Skyscraper 2 - Hero City".
In the Damage Step, During Damage Calculation, If an Attack Position Monsters battle each other, the one with the lower ATK is destroyed by battle. If Defense Position monster is attacked, neither batling monster will be destroyed by battle unless the attacked Defense Position Monster has less DEF than the attacking monster's ATK.
If a Monster is destroyed by battle, it will be sent to the GY at the End of the Damage Step.
Some cards, such as "Mystic Swordsman LV2" and "Drillroid", have effects that destroy battling monsters during the Damage Step. However, cards destroyed this way are destroyed by that card effect, so are not considered to be destroyed by battle.
If a monster would activate its "Destroy an opponent's Monster by battle" (e.g. Elemental HERO Flame Wingman) Effect, it must remain on the field at the End of Damage Step.