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Battle Drill info

"A fine example of goblin ingenuity, the Battle Drill burrows underground towards the nearest defense. On arrival it pops up to stun and demolish with its dastardly drill."

Battle Drill1
Level 1
Battle Drill2
Level 2
Battle Drill3
Level 3
Battle Drill4
Level 4


  • The Battle Drill is the seventh Siege Machine to be unlocked, when the Workshop is upgraded to level 7 (this requires Town Hall level 15).
  • The Battle Drill burrows underground towards defenses, stunning all defenses in a small area around it for a short time once it surfaces. Once its target is destroyed, it will burrow underground towards its next target.
  • Battle Drills prioritize defensive structures above all other targets, and will bypass all other types of enemy buildings and troops while any defenses remain on the battlefield. This is true even if they are under attack by enemy Clan Castle troops, heroes or Skeleton Trap skeletons. Note that like all troops that prioritize defenses, Battle Drills do not consider the Clan Castle to be a defense regardless of whether or not it contains enemy troops, but do consider the defending Grand Warden and the activated Town Hall weapon (if any) to be defensive buildings.
    Once all defenses are destroyed, Battle Drills become like any other troop with no preferred target; they will attack the nearest building to them regardless of type, and will turn and attack enemy units if they become aware of any nearby and can fight back against them. However, they will not switch targets to enemy units until their previous target was destroyed.
  • The Battle Drill also instantly destroys any Walls it comes into contact with when it surfaces.
  • Unlike other Siege Machines which can be donated to any level 6 or higher Clan Castles, the Battle Drill cannot be received in a Clan Castle until the latter is upgraded to at least level 9.


Offensive Strategy

  • Since it is able to stun defenses, this means it can reset single-target Inferno Towers. You can use the Battle Drill alongside a Hero thus creating a great hero dive, hence it can be good with the Royal Champion, Since they are both defense-targeting.
  • Be careful with the position of defensive buildings, because since the Battle Drill can instantly destroy any level of walls, it may open compartments where you may not want your main army to go, so be careful of that.
  • Stocking the Battle Drill with high damage dealing troops, such as P.E.K.K.As, and supported with Rage Spells, can reap high value by taking out high-priority defenses when it is destroyed.
  • It can effectively take out defenses with blind spots like the Eagle Artillery and Scattershot due to its melee nature and its relatively high damage.
  • You can activate a weaponized Town Hall with an Earthquake Spell and the sending the Battle Drill to then snipe it if there isn't enough support around the Town Hall.
  • Because of it's burrowing nature, you can merge the Battle Drill with attacks with such as Queen Charge Miners and Hybrid. Make sure that you have previously funneled, though, or they might not go in the same direction.
  • Pairing the Battle Drill with a Royal Champion paired with Diggy allows you to stun multiple defenses, thus helping your army.
    • However, the stun won't stack, so make sure they don't go onto the same defense.
  • A disadvantage to the battle drill is the somewhat mediocre attack rate, as high damage defenses can take it down with little to no damage done. Always have an Inferno Tower or a Scattershot in places where you think the Battle Drill could reach.

Defensive Strategy

  • Inferno Towers and Scattershots are good ways to counter the Battle Drill, with the inferno tower for its high damage and the scattershot to destroy low-health troops inside it.
    • However, make sure to distract them with other defenses, as if it locks on, it could potentially reset the damage, and if it burrows underground, it will actually reset the inferno tower.
      • Skeleton Traps are a good way to deal damage onto the Battle Drill. As they won't attack the skeletons, as if the Battle Drill is alone, the siege machine could die prematurely.
      • Rage Spell Towers are also a good way to add damage onto defenses that are targeting the battle drill.

Upgrade Differences

  • The Battle Drill undergoes significant changes at level 2 and 4.
    • Initially, the Battle Drill is a red wooden box with a large drill attached to its front and metal plating added on the center. There is a small window with a reinforced metal frame at the top of the drill. Below the window is a skull with pointed ears, which represents the Goblin.
    • At level 2, the Battle Drill has a golden "II" roman numeral attached to the front, and the wooden part of the window becomes metal.
    • At level 3, the roman numeral becomes "III", and the studs on the window face become golden.
    • At level 4, the roman numeral becomes "IV". The entire window frame becomes golden and a gold ring is added to the the drill.


Preferred Target Favorite Target Attack Type Damage Type Range Range Housing Space
Housing Space
Movement Speed
Movement Speed
Attack Speed Attack Speed Workshop Level Required
Defenses Single Target (Ground Only) 1 tile 1 24 1.7s 7
Building Time of Battle Drill
Workshop available Workshop upgrading
20m 40m
Damage per Second
Damage per Attack
Research Cost
Research Time
Laboratory Level Required
1 430 731 4,600 N/A N/A N/A
2 470 799 4,900 8,000,000 7d 12h 13
3 510 867 5,200 11,000,000 10d 13
4 550 935 5,500 14,000,000 12d 13



  • The Battle Drill is very similar to the Goblin Drill from Clash Royale.
    • In Clash Royale, the Goblin Drill can be deployed in the opposing territory like the Miner, while the Battle Drill burrows to the next target each time it moves, like the Miner in Clash of Clans.
  • The Battle Drill is one of only two Siege Machines to have a name that is not an alliteration, the other being the Siege Barracks.
  • When donated or received via donation, the drill travels on a wheeled platform.
  • The Battle Drill is one of 3 Siege Machines which target defenses, the others being the Stone Slammer and the Flame Flinger.
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