Updated for Town Hall 18 (October 2026).
In the Builder Base, each Army Camp is one troop slot: it holds a single troop type, and how many units fit depends on the troop and its level. You get up to six camps, the last one at Builder Hall 7. Builder Base 2.0 (May 2023) changed how camps work in three ways: far fewer troops fit in each camp, camps are split between Stage 1 and Stage 2 of your base, and a new Reinforcement Camp adds slots that only open up in Stage 2.
How Builder Base Army Camps work
The Builder Base camp does not pool housing space the way an Army Camp in the Home Village does. Instead, every camp is assigned one troop from your Builder Barracks, and that slot appears as one button on your deployment bar. Six camps means six slots, whatever you put in them.
- Filling a camp is instant and free. You can swap any slot for any unlocked troop right up to the moment the battle starts.
- Every camp (and Reinforcement Camp) has to be filled before you can attack. Troops you never deploy are used up anyway, which costs you nothing because training is free.
- Camps cannot be upgraded. The only way to fit more units in a slot is to research certain troops in the Star Laboratory.
- On defense a camp is a 3×3 building with 300 hitpoints. It does not fight.
What changed with Builder Base 2.0
Fewer troops per camp
Supercell’s 2.0 notes say plainly that the number of troops per slot was reduced, and the gap is large for the swarm troops. In exchange, individual troops got much tougher. Some before-and-after numbers at the old maximum level (18):
| Troop | Units per camp before 2.0 | Units per camp now | Hitpoints at level 18 before | Hitpoints at level 18 now |
|---|---|---|---|---|
| Raged Barbarian | 20 | 4 | 322 | 1,072 |
| Sneaky Archer | 14 | 4 | 215 | 420 |
| Bomber | 5 | 1 | 215 | 1,072 |
| Drop Ship | 2 | 1 | 3,113 | 4,525 |
| Hog Glider | 3 | 2 | 650 | 650 |
Each slot is worth a lot more than it used to be. It is also harder to lose a whole slot at once: a single Mega Mine used to wipe out a camp of Raged Barbarians, and now most of them survive the blast.
Camps are split between two stages
From Builder Hall 6 your base has a second stage (the Builder Base 2.0 guide covers how stages work), and every building has to be placed on one of them. Army Camps are capped at four on Stage 1. Stage 2 takes one camp at Builder Hall 6 and two from Builder Hall 7. Placement only matters for your defensive layout: when you attack, every camp you own still gives you a troop slot.
Your army carries into Stage 2
Clear Stage 1 completely and the attack moves to Stage 2. Troops that survived return to your deployment bar and can be dropped again, after the Healing Hut restores part of their health (4% at Healing Hut level 1, up to 24% at level 6). Any camp you did not deploy at all in Stage 1 can be swapped for a different troop before Stage 2 begins. Troops that already used a one-time ability do not get it back.
Reinforcement Camps add Stage 2 slots
The Reinforcement Camp is a new 2.0 building that works like an Army Camp, except its troops can only be deployed once you reach Stage 2. You choose reinforcement troops before the attack and can change them after Stage 2 is revealed, until you start deploying. The first Reinforcement Camp comes pre-built on Stage 2 at Builder Hall 6. The second unlocks at Builder Hall 9 for 4,000,000 Builder Elixir and 10 days. With six Army Camps and two Reinforcement Camps, a maxed attack has eight slots.
Army Camps by Builder Hall level
| Builder Hall | Army Camps | Stage 1 / Stage 2 limit | Reinforcement Camps | Cost of the new camp | Build time |
|---|---|---|---|---|---|
| 1 | 1 | – | 0 | Starts as a ruin, repaired with Builder Hall 2 | – |
| 2 | 2 | – | 0 | 12,000 | 5m |
| 3 | 3 | – | 0 | 180,000 | 3h |
| 4 | 4 | – | 0 | 350,000 | 8h |
| 5 | 4 | – | 0 | No new camp | – |
| 6 | 5 | 4 / 1 | 1 | 2,000,000 | 3d |
| 7 | 6 | 4 / 2 | 1 | 3,000,000 | 6d |
| 8 | 6 | 4 / 2 | 1 | No new camp | – |
| 9 | 6 | 4 / 2 | 2 | No new camp | – |
| 10 | 6 | 4 / 2 | 2 | No new camp | – |
Costs are in Builder Elixir. Each extra camp costs more than the last. The 2.0 update also moved the fifth camp down from Builder Hall 7 to Builder Hall 6, priced at 2,000,000 with a 3-day build.
How many troops fit in one camp
| Troop | Builder Barracks level (Builder Hall) | Units per camp |
|---|---|---|
| Raged Barbarian | 1 (2) | 3, or 4 from level 6 |
| Sneaky Archer | 2 (2) | 3, or 4 from level 10 |
| Boxer Giant | 3 (3) | 1 |
| Beta Minion | 4 (3) | 3, or 4 from level 10 |
| Bomber | 5 (4) | 1 |
| Baby Dragon | 6 (4) | 1 |
| Cannon Cart | 7 (5) | 1 |
| Night Witch | 8 (6) | 1 |
| Drop Ship | 9 (7) | 1 |
| Power P.E.K.K.A | 10 (8) | 1 |
| Hog Glider | 11 (9) | 2 |
| Electrofire Wizard | 12 (10) | 1 |
Using your camps well
Hold a camp back when Stage 1 is going well. Because a fully undeployed camp can be swapped before Stage 2, finishing Stage 1 with one slot unused lets you pick a troop for the base you can now see, on top of your reinforcements.
Think in slots, not troop counts. With one Bomber or one Drop Ship per camp, each slot is a single unit, so a mix of one tank, one wall-breaker and several damage dealers usually beats six copies of the same thing. For layout, camps on Stage 1 are cheap filler with 300 hitpoints. Use them to pad the outside of your base or to space out your defenses.
Builder Base Army Camp FAQ
How many Army Camps can you have in the Builder Base?
Six, from Builder Hall 7. Add two Reinforcement Camps at Builder Hall 9 for eight troop slots in total.
Can you upgrade Army Camps in the Builder Base?
No. Capacity per camp only rises when you research Raged Barbarians, Sneaky Archers or Beta Minions past certain levels.
Why do my camps hold so few troops now?
Builder Base 2.0 cut troops per slot in May 2023 and gave each troop much more hitpoints to compensate.
Do Army Camps on Stage 2 still count for my attack?
Yes. Where a camp sits only affects your defense. Every camp you own is a slot when you attack.
Sources: Supercell release notes (Supercell, Builder Base 2.0 patch notes (May 2023)) and in-game data.
