Last War Tactical Drone: Battle Data, Parts, Chips

The decision

The drone attacks in battle and cannot be attacked. Level it with Battle Data. Do not spend parts on a bar that does not ask for them.

How to spend it

Spend Battle Data on the open bar.
If the next level also costs Drone Parts, save the parts for that gate. Do not spend them on a normal bar.
Do not push a training bar past 80% if you are waiting on a crit. The crit is gone at 80%, and it never fires on a parts level.
Fill six components. Choice chests go to the right side. Research Points go to the missile first.
Combat Boost only takes unused chips. Do not feed a chip that is on a preset you still send.
Finish the four chips for the squad you march before a second type. Load that preset before the battle.

When to spend: the duel week

Mon

Radar Training

Spend Battle Data and Drone Parts. Open skill-chip chests.

Tue

Bank data and parts.

Wed

Age of Science

Open component chests. Choice chests: missile, camera, fuel cell.

Thu

Hero training

Bank. No drone points.

Fri

Speedups and troops

Bank. No drone points.

Sat

The fight

Bank. Parts level the drone but do not score.

Sun

Bank data and parts.

Drone levels and skill-chip chests score on Monday only. Component chests score on Wednesday only. Bank the rest of the week, unless a fight that week needs the level.

Arms Race has its own Drone Boost window. If it misses Monday, take Monday's duel points. Do not hold a parts gate past a fight you need just to catch both.

The six components

The part names come from community upgrade guides, not the Instructions screen. Left side is the defense set. Right side is the attack set.

Part	Side	What the guides say it does	Priority
Air-to-air missile	Right	Hero attack. The Japanese guide rates this the only top piece.	First
Infrared camera	Right	Crit attack	Second
Fuel cell	Right	Drone attack, and crit damage	Second
Turbine engine	Left	Hero HP, flat and percent	Low
External armor	Left	Durability	Low
Radar	Left	Drone HP, and less chance to be crit	Last

Chests. Random chests favor the left. The chest's own odds screen shows about 22% for each left piece and about 11% for each right piece. Spend every choice chest on the right: missile, fuel cell, or infrared camera. Do not spend a choice chest on radar, engine, or armor. Those already drop more often.

Merging. Merge three of the same part and level through level 7. From level 8 the piece fills a Research Points bar. Spare components of the same type feed that bar. A level-8 piece costs 2,187 level-1 parts if you merged the whole way. Level 9 is 6,561. That is why the right side lags.

Research order. Put Research Points on the right side first: the missile to 100%, then the infrared camera, then the fuel cell. Leave the left pieces where they are until a right piece clears its next 20% mark. Extra boosts still land at 20, 40, 60, 80, and 100, and a gain under 1% pays nothing.

Example: missile at 81%, infrared camera at 53%, fuel cell at 50%, three level-9 left pieces at 17%. Take the missile to 100%. Then the camera, then the fuel cell. The left pieces wait.

Level path. Separate from components. Every fifth level is a parts checkpoint with five stages. The parts cost per stage climbs to about 1,000 near level 145, drops to 100 per stage (500 total) at level 150, then climbs again. Skill levels on the Instructions screen are 30, 50, 70, 90, and 110. Confirm the next checkpoint on Upgrade Preview.

Skill chips and Combat Boost

Four slots, two timings. Initial and Defensive fire once, at the start of battle. Offensive and Interference fire every time the drone attacks.
Same text for every troop type. A chip of a given slot and rarity reads the same for Tank, Air, and Missile. Only the troop type changes.
Legendary over epic, always. Epic defensive chips last 3 to 15 seconds. Legendary ones last until the battle ends and add a second effect. Swap an epic out the day you get a legendary, even a starred-up epic.
Stars. Only epic and legendary chips take duplicates. Common and uncommon chips cannot be raised.
Presets. Each preset can be used by one squad at a time. The first opens at Combat Boost level 10. Each Combat Boost stage is 150 levels, and later stages add presets and raise Chip Skill Boost.
Combat Boost experience. Early levels run on Combat Boost experience cards from daily tasks and events. The purple card, 10,000 experience, is in the alliance shop. After that, unused chips feed it.

Sample screens

From one account. Tap a screen to open it full size.

Tactical Drone Attributes tab at level 177 — **Attributes.** Level 177 needs 252K Battle Data and 140 Drone Parts. With 80 parts, this level waits. That is the parts gate.

Tactical Drone Component tab — **Component.** Left: three level-9 pieces at 17%. Right: missile 81%, camera 53%, fuel cell 50%. The missile goes first.

Tactical Drone Combat Boost tab — **Combat Boost.** Stage III, level 410. Unused chips feed it. Chip Skill Boost reads +2.

Tactical Drone Skill Chip tab — **Skill Chip.** Preset 1 is the Tank Chip Set: four chips for the squad you march.

Three mistakes

Training past 80% and expecting a crit.
Putting Research Points in under a full 1%.
Feeding an equipped chip into Combat Boost.

Written for players who already have a march. Rules are the ones on the Tactical Drone Instructions screen, which can change. Confirm the next part gate before you spend the parts. Updated October 4, 2026.

The rules

From the in-game Instructions screen.

Data Training spends Battle Data. When the bar fills, the drone levels and those attributes convert into hero attributes. The Overlord gets a share too.
Under 80% progress, training has a 50% chance to crit and double the progress from the data spent. At 80% or more, no crit.
A level that also costs Drone Parts does not crit.
Skill level rises at drone levels 30, 50, 70, 90, and 110.
Components open at Headquarters 15. Six slots. Through level 7, three of the same type and level merge into the next. From level 8, merging stops and the piece takes Research Points.
Each full 1% of research progress is an attribute boost. A gain under 1% pays nothing. Extra boosts land at 20%, 40%, 60%, 80%, and 100%.
Combat Boost and Skill Chips open on server day 82. Skill Chips open at Combat Boost level 10.
One preset is four skills: Initial, Offensive, Interference, and Defensive. Choose the preset before the battle.
SSR and UR chips of the same name raise the stars. Unused chips feed Combat Boost. Each new Combat Boost stage raises Chip Skill Boost.

Free drone sources

Drone Component Factory. Opens at Headquarters 15 and makes level-1 components every day. At factory level 19 it hits the daily cap of 7, about 49 a week.
Drone Parts Factory. Unlocks from the Age of Oil research tree after Season 3, at Headquarters 30. At level 30 it makes up to 6 parts a day, about 42 a week.

Collect both every day. The parts checkpoints need thousands of parts, and these are the only steady free supply.

Drone level: data first, then the parts gate