War Machine

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War machine is a common term used for referring to either an Ammo Cart, Ballista, Cannon Horn of the Abyss, First Aid Tent or Catapult. Basically they are all special combat units which are available in most of the battles. The only exceptions are creature banks and shipwrecks, where none of the war machines are used. Furthermore, Catapults are only used in siege combats. All war machines have a special slot reserved just for that particular war machine.

Typically, war machines except the Catapult are bought from Blacksmiths, which sell different war machine depending on the town. Additionally, war machines can be bought from an Adventure Map location called the War Machine Factory, which sell all war machines (except Catapults and Cannons Horn of the Abyss). Cannons Horn of the Abyss can be purchased from a Cannon Yard Horn of the Abyss. Stronghold has the special building Ballista Yard, where a visiting hero can buy a Ballista. All heroes have the Catapult with them, and if one is destroyed in the combat, a new one is automatically added to hero's catapult slot.

All war machines are immobile and unaffected by morale (Ballista and Cannon Horn of the Abyss can have a lucky strike, and in the Horn of the Abyss, they both can have bad luck). Additionally, war machines do not affect the hero's movement. On the battlefield AI considers Catapult, Ballista and Cannon Horn of the Abyss as ranged units, ignoring the moment they can not be blocked.

War machines can be traded between heroes, but can not be dismissed or put in the hero's backpack. In Horn of the Abyss Horn of the Abyss, war machines (except the catapult) can be dismissed.

War machines are immune to:

Spells Abilities
 Implosion Aging Ghost Dragon Ghost Dragon
 Clone Death cloud Lich Power Lich Liches
 Bloodlust Death stare Mighty Gorgon Mighty Gorgon
Mind spells - (Berserk, Blind, Forgetfulness, Frenzy, Hypnotize, Mirth, Sorrow) Disease Zombie Zombie
 Berserk can be cast without any effect. Fear Azure Dragon Azure Dragon
 Frenzy can be cast by the Orb of VulnerabilityOrb of Vulnerability owner. Life drain Vampire Lord Vampire Lord
 Death Ripple and  Destroy Undead Paralyze Scorpicore Scorpicore
 Slow and  Haste Petrify Medusa Medusa Queen Medusas Basilisk Greater Basilisk Basilisks
 Teleport Poison Wyvern Monarch Wyvern Monarch Sea Serpent Haspid Sea Serpent and Haspid
 Resurrection and  Sacrifice Summon demons Pit Lord Pit Lord
 Counterstrike Accurate shot Horn of the Abyss Sea Dog Sea Dog
  Repair Horn of the Abyss Mechanic Engineer Mechanic and Engineer

War machines are affected by these spells:
Note that damage dealing related buffs are effective for Ballista and Cannon Horn of the Abyss only:

 Anti-Magic and  Dispel
 Fortune and  Misfortune
 Bless and  Curse
 Slayer,  Prayer and  Precision
 Shield and  Stone Skin
 Air Shield and  Magic Mirror
 Protection from Air and others
 Fire Shield

Ammo Cart[edit]

Ammo cart
Defense  5
Health 100
Cost 1000 Gold

Ammo Сart provides unlimited shots for creatures and War Machines with ranged attacks. The shots start to decrease right after the Ammo Cart is destroyed. Despite the fact that the Ammo Cart is not used during a creature bank or shipwreck battle, it still provides unlimited ammo. In damage calculations, Ammo Cart goes as level 1 unit, its AI Value is 400. For the Map-Editor, it is an artifact equipped in the War Machine 2 slot.

Ammo Cart can be purchased at:

First Aid Tent[edit]

First aid tent
Health 75
Cost 750 Gold

First Aid Tent heals 1-25 Restoration of Erathia (20-25 Horn of the Abyss) hit points of the top creature in target allied stack. The amount of health restored is affected by First Aid secondary skill, which also gives the player control over the tent rather than being chosen by computer. First Aid Tents act last at the combat round. In damage calculations, First Aid Tent goes as level 1 unit, its AI Value is 300. For the Map-Editor, it is an artifact equipped in the War Machine 3 slot. Oddly enough, Necropolis' heroes cannot learn First Aid, even though their blacksmith produces First Aid Tents.

First Aid Tent can be purchased at:

Heroes with First Aid specialty:

(88% (100% Horn of the Abyss) chance to start with a First Aid Tent)


Attack 10
Defense  10
Health 1000
Cost N/A
Shots 24

The Catapult only appears on the battlefield when siege attacking enemy towns with walls, which requires the town to have a fort, citadel, or castle. Its main use is to attack and destroy the walls in order to enable ground troops to attack the defenders. The Catapult can also attack and destroy the arrow towers of citadels and castles. The ballistics secondary skill enhances the performance of the Catapult. Basic ballistics gives the player control over the Catapult making it possible to aim at particular parts of the siege structures. During a siege, the Catapult shoots after the arrow towers, but before any other troop. In damage calculations, Catapult goes as level 1 unit, its AI Value is 500.


Attack 10
Defense  10
Damage 2–3
Health 250
Cost 2500 Gold
Shots 24

A ballista is a missile weapon that, like ranged units, shoots projectiles toward enemy troops, but is unable to retaliate against attacks. It can shoot even if one or several enemy stacks are adjacent to it. It has a basic damage range (of 2–3) like creatures, but the damage calculation is different. The formula for the calculation of damage is (2–3)*(hero's attack + 1). The Artillery and Archery secondary skills increase this damage. The ballista acts at the end of every combat round, followed only by the First Aid Tent, and can be controlled when a hero has learned any level of Artillery. Contrary to what its in-game statistics indicate, a ballista has unlimited shots (fixed in Horn of the AbyssHorn of the Abyss.

In damage calculations, Ballista goes as level 5 unit, its AI Value is 600. For the Map-Editor, it is an artifact equipped in the War Machine 1 slot. Sometime when AI calculate that you have less army to survive for next run in the battle, and before Ballista to shot, you'll get a message only once, for retreat your hero.

Ballista can be purchased at:

Heroes with Ballista specialty:

(88% (100% Horn of the Abyss) chance to start with a Ballista)

Horn of the Abyss[edit]


Attack 20
Defense  10
Damage 4–7
Health 250
Cost 4000 Gold
Shots 8

Cove War Machine. The formula for the calculation of damage is (4–7)*(hero's attack + 1). It costs 4000 gold.

  • Is put in the Ballista (War Machine 1) slot of a hero. It cannot be put in a backpack.
  • Assault battle machine. Only attacks by shooting. Is not blocked by standing next to an enemy unit. Can attack enemy troops and fortifications. One does not need to destroy the cannon to win the battle. No experience is given for its destruction.
  • Is put in place of Ballista during battle. Does not participate in the battle on the side of the defender during the siege, as well as the battles in vaults and banks. Moves at the same time as Ballista (before the First Aid Tent). Controlled by the AI.
  • In damage calculations, Cannon goes as level 6 unit, its AI Value is 825.

Effect of Artillery skill

  • None. All features work as described above.
  • Basic. Gives you control of the cannon. Aimed shot with increased damage on the fortifications.
  • Advanced. Gives you control of the cannon. Double damage on unit, aimed shot with increased damage on the fortifications.
  • Expert. Gives you control of the cannon. Triple damage on unit, aimed shot with maximum damage on the fortifications.

Cannon can be purchased at:

Heroes with Cannon specialty:

(always starts with a Cannon)

Ballista vs. Cannon[edit]

Here a table showing the average damage of a Ballista and Cannon with and without Artillery skill. Note that the Cannon has 20 Attack and 8 shots while the Ballista has only 10 Attack but 24 shots:

Hero Attack Average damage Average damage against creature with 10 defense (including bonus from attack)
Ballista (10 Attack) Cannon (20 Attack) Ballista (10 Attack) Cannon (20 Attack)
Base Artillery Base Artillery Base Artillery Base Artillery
Basic Advanced Expert Basic Advanced Expert Basic Advanced Expert Basic Advanced Expert
0 2.5 3.75 8.75 10 5.5 5.5 11 16.5 2.5 3.75 8.75 10 8.25 8.25 13.75 19.25
1 5 7.5 17.5 20 11 11 22 33 5.25 7.75 18 20.5 17.05 17.05 28.05 39.05
2 7.5 11.25 26.25 30 16.5 16.5 33 49.5 8.25 12 27.75 31.5 26.4 26.4 42.9 59.4
3 10 15 35 40 22 22 44 66 11.5 16.5 38 43 36.3 36.3 58.3 80.3
4 12.5 18.75 43.75 50 27.5 27.5 55 82.5 15 21.25 48.75 55 46.75 46.75 74.25 101.75
5 15 22.5 52.5 60 33 33 66 99 18.75 26.25 60 67.5 57.75 57.75 90.75 123.75
10 27.5 41.25 96.25 110 60.5 60.5 121 181.5 41.25 55 123.75 137.5 121 121 181.5 242
15 40 60 140 160 88 88 176 264 70 90 200 220 198 198 286 374
20 52.5 78.75 183.75 210 115.5 115.5 231 346.5 105 131.25 288.75 315 288.75 288.75 404.25 519.75
25 65 97.5 227.5 260 143 143 286 429 146.25 178.75 390 422.5 393.25 393.25 536.25 679.25
30 77.5 116.25 271.25 310 170.5 170.5 341 511.5 193.75 232.5 503.75 542.5 511.5 511.5 682 852.5
35 90 135 315 360 198 198 396 594 247.5 292.5 630 675 643.5 643.5 841.5 1039.5
40 102.5 153.75 358.75 410 225.5 225.5 451 676.5 307.5 358.75 768.75 820 789.25 789.25 1014.75 1240.25
50 127.5 191.25 446.25 510 280.5 280.5 561 841.5 446.25 510 1083.75 1147.5 1122 1122 1402.5 1683
60 152.5 228.75 533.75 610 335.5 335.5 671 1006.5 610 686.25 1448.75 1525 1342 1342 1677.5 2013
70 177.5 266.25 621.25 710 390.5 390.5 781 1171.5 710 798.75 1686.25 1775 1562 1562 1952.5 2343
80 202.5 303.75 708.75 810 445.5 445.5 891 1336.5 810 911.25 1923.75 2025 1782 1782 2227.5 2673
90 227.5 341.25 796.25 910 500.5 500.5 1001 1501.5 910 1023.75 2161.25 2275 2002 2002 2502.5 3003
99 250 375 875 1000 550 550 1100 1650 1000 1125 2375 2500 2200 2200 2750 3300

Official Renders[edit]

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Some may find the information in this section subjective or irrelevant.

In general, the importance of War Machines is decreasing throughout the game, as you have big army and powerful damage spells.

The Ballista is a war machine of some limited use, however it requires a high (25+) Attack skill before it starts dealing enough damage to justify its 2500 Gold cost. The Artillery skill can offset this somewhat, but comes with the high opportunity cost of omitting a potentially more useful secondary skill such as Offense or Armorer. The above restrictions generally limit the Ballista to might heroes with high Attack skill. Of the four towns that sell Ballistae, Barbarians from Stronghold are most likely to reach this skill - more defensive heroes such as those from Fortress will not be able to make use of the Ballista as efficiently. Note that if you don't have Artillery skill, Ballista can spoil the battle if you want to blind the only remaining enemy stack and resurrect/animate your whole army. It will shoot and unblind the enemy. Most of this applies to the Cannon Horn of the Abyss as well.

The First Aid tent is most often useless, even with the (also nearly useless) First Aid skill at its top level. Its main limitation is that it cannot resurrect killed creatures, so it's useless for low-level creatures. The only case in which a First Aid Tent is useful is when a player obtains a high-level creature early in the game. Setting a hero up with 1-2 high level creatures and a first-aid tent ensures that the healing is not wasted and allows the player to clear wandering monsters from the map more easily. You may start with a hero with First Aid tent, even if your blacksmith doesn't produce it, and rush through the map using 1-2 sixth level creatures.

The Ammo Cart's unlimited ammunition is usually unnecessary besides a very long battle, but is extremely useful in the few situations when it is needed. Most shooters in the game have enough ammunition to attack 12 times, with many carrying more. The few exceptions are Master Gremlins and Medusa Queens (8 shots), and Medusas, Pirates, and Corsairs (only 4 shots!). With good Morale, these creatures run the risk of quickly depleting their ammunition over the course of a battle. This can be the difference between defeat and victory, particularly in a bloody castle siege. If the enemy Catapult can be destroyed and their flying units killed, even a single shooter with an ammunition cart can eventually drive of the enemy if the walls are still intact.

As every hero gets a Catapult free of cost which is only deployed for siege warfare, there is little choice involved in catapult usage other than targeting with the Ballistics skill.