Troop Training Guide: The Waterfall Method
Train lower-tier soldiers, then promote them toward your target tier. Use this guide to compare the complete training route, budget resources, and plan your next batch.
Waterfall example · Training setup · Event timing · Before you start

The waterfall example, step by step
The supplied chart shows one fresh T4 batch followed by three promotions. It jumps from T6 to T8; it does not provide a separate T7 step. Follow the promotion choices available in your own Training Ground.
| Action | Time | Grain | Wood |
|---|---|---|---|
| Train T4 fresh | 09:21:03 | 365K | 365K |
| Promote T4 → T5 | 01:52:13 | 341K | 341K |
| Promote T5 → T6 | 03:44:26 | 632K | 632K |
| Promote T6 → T8 | 05:29:47 | 1.23M | 1.23M |
| Complete route | 20:27:29 | ≈2.568M | ≈2.568M |
The four timers add to 20 hours, 27 minutes, 29 seconds. The original chart compares that with 40+ hours for fresh T8 training. Against exactly 40 hours, the difference would be 19:32:31, or about 49% less time.
Compare like for like: that percentage only means something when troop count, troop type, research, VIP and buffs match. The chart does not specify those conditions, so treat its comparison as an example rather than a guaranteed saving. Resource totals use rounded chart values; there is no direct-T8 resource bill here to prove a resource saving.
Training Setup and Minister of War
Use the waterfall approach: train a lower tier and promote toward your maximum. The reference example above goes T4 → T5 → T6 → T8; follow the intermediate promotion options available in your game.
Have Minister of War active when starting training and promotions whenever possible. If you are waiting for the appointment, start a smaller batch timed to finish when the buff becomes available so the queue stays productive.
Alliance Duel timing
On Day 4, train troops one to three tiers below your maximum without speedups. On Day 5, activate Minister of War, promote the prepared troops one tier at a time, and use Training Speedups during the matching Survival Battle window. See the weekly planner.
Barracks level plan by Sanctuary level
Keep building 1 at your Sanctuary level. The guide calls these four buildings “Barracks”; use its tier-production setup as your reference and check the corresponding building in your game. The supporting-building targets change at Sanctuary 17, 20, 24, 27 and 30.
| Sanctuary | Barracks 1 | Barracks 2 | Barracks 3 | Barracks 4 |
|---|---|---|---|---|
| 14 | 14 | 13 | 9 | 5 |
| 15 | 15 | 13 | 9 | 5 |
| 16 | 16 | 13 | 9 | 5 |
| 17 | 17 | 16 | 13 | 9 |
| 18 | 18 | 16 | 13 | 9 |
| 19 | 19 | 16 | 13 | 9 |
| 20 | 20 | 19 | 16 | 13 |
| 21 | 21 | 19 | 16 | 13 |
| 22 | 22 | 19 | 16 | 13 |
| 23 | 23 | 19 | 16 | 13 |
| 24 | 24 | 23 | 19 | 16 |
| 25 | 25 | 23 | 19 | 16 |
| 26 | 26 | 23 | 19 | 16 |
| 27 | 27 | 26 | 23 | 19 |
| 28 | 28 | 26 | 23 | 19 |
| 29 | 29 | 26 | 23 | 19 |
| 30 | 30 | 29 | 26 | 23 |
Updated to follow the Last Asylum Alliance Guide, reviewed October 28, 2026. Recommendations and figures reflect that community guide.
Before you commit a large batch
- Choose a fixed headcount. Write down the troop type, starting tier and target tier so every comparison uses the same soldiers.
- Record the full route. Include fresh training, every promotion, and any time waiting for the promotion ground to become free.
- Add every resource charge. A cheaper first queue does not automatically mean a cheaper finished army.
- Check your bonuses. Research, technology, VIP and temporary buffs can change the displayed estimates.
- Test event credit. Record your score, finish a small batch, and check which scoring category changed before committing your saved speedups.
- Plan your return. Pick a batch that finishes when you can restart the queue.
Does every promotion step have to be used?
The poster records one example sequence. It does not establish that every account must follow those intermediate tiers. Compare the promotion routes your game actually offers.
Will this always halve my training time?
No. Use your own matching batch measurements. Neither an unspecified screenshot nor a shorter promotion timer alone proves the total saving for your account.