The Emergency Center helps protect troops that cannot fit inside your Hospital after a battle in Last War Survival. Its level determines how many fainted units can be stored, what percentage of overflow troops can be rescued, and how frequently the rescue function becomes available. This guide covers its mechanics, upgrade requirements, Age of Oil levels, and practical ways to reduce permanent troop losses.
Understanding the Emergency Center
The Emergency Center, sometimes called the ICU by players, is a secondary troop recovery building. When your Hospital reaches its capacity, a percentage of the remaining injured troops can be transferred to the Emergency Center instead of being permanently lost.
Upgrading the building increases the number of units it can hold and improves the percentage of eligible troops that can be rescued. This makes it especially valuable during prolonged wars, alliance battles, and other activities where your Hospital may fill quickly.
- Fainted Unit Ratio: The percentage of eligible troops transferred to the Emergency Center after the Hospital reaches its limit.
- Fainted Unit Capacity: The maximum number of troops the Emergency Center can hold.
- Rescue Cooldown: The waiting period before the rescue function can be used again.
The Emergency Center becomes available when your Headquarters reaches level 22. You can review the earlier building requirements and resource costs in the Last War Headquarters upgrade guide.
Emergency Center Upgrade Requirements
Upgrading the Emergency Center improves its Fainted Unit Ratio and storage capacity. Higher levels can help preserve more troops after heavy battles, although the resource costs become considerably greater as your base develops.
The table below shows selected upgrade milestones:
| Level | Iron | Food | Coin | Oil | Fainted Unit Ratio | Fainted Unit Capacity | Rescue Cooldown |
|---|---|---|---|---|---|---|---|
| 1 | 10 | 10 | – | 21% | 450 | 2d 12h | |
| 5 | 14,000 | 14,000 | – | 25% | 650 | 2d 10h | |
| 10 | 370,000 | 370,000 | 60,000 | 30% | 900 | 2d 8h | |
| 15 | 3,400,000 | 3,400,000 | 550,000 | 34% | 1,100 | 1d 17h 1m 45s | |
| 20 | 30,000,000 | 30,000,000 | 4,800,000 | 39% | 1,350 | 3d 19h 35m 10s | |
| 25 | 140,000,000 | 140,000,000 | 23,000,000 | 40% | 1,700 | 23d 7m 56s | |
| 30 | 720,000,000 | 720,000,000 | 120,000,000 | 40% | 2,000 | 88d 3h 6m | |
| 35 | 1,100,000,000 | 1,100,000,000 | 170,000,000 | 40% | 2,100 | 1d 22h 50m 40s |
Important Note: The values above represent base upgrade requirements. Research, VIP benefits, construction bonuses, and other effects may reduce the actual costs or time required. The Fainted Unit Ratio reaches its listed maximum of 40% at higher levels, while capacity continues to increase.
Age of Oil Enhancements
After your warzone progresses beyond Season 2 and enters the Age of Oil, buildings can advance beyond level 30. To unlock these additional levels, complete the “HQ Expansion” technology in the Tech Center.
Levels 31 through 35 require Oil in addition to Iron, Food, and Coin. The Fainted Unit Ratio remains at 40%, but each level provides additional capacity.
| Level | Iron | Food | Coin | Oil | Fainted Unit Ratio | Fainted Unit Capacity | Rescue Cooldown |
|---|---|---|---|---|---|---|---|
| 31 | 790,000,000 | 790,000,000 | 130,000,000 | 360,000 | 40% | 2,020 | 2d |
| 32 | 870,000,000 | 870,000,000 | 140,000,000 | 576,000 | 40% | 2,040 | 2d |
| 33 | 960,000,000 | 960,000,000 | 150,000,000 | 979,200 | 40% | 2,060 | 2d |
| 34 | 1,000,000,000 | 1,000,000,000 | 160,000,000 | 1,762,560 | 40% | 2,080 | 2d |
| 35 | 1,100,000,000 | 1,100,000,000 | 170,000,000 | 3,525,120 | 40% | 2,100 | 1d 22h 50m 40s |
How the Emergency Center and Hospital Work Together
The Hospital remains your primary building for injured troops. The Emergency Center only becomes relevant when the Hospital cannot hold every casualty generated during a battle.
For this reason, upgrading one building while neglecting the other is not an efficient strategy. A larger Hospital reduces the number of troops that overflow, while a stronger Emergency Center improves your ability to preserve some of the remaining units.
Both buildings become more important as your troop count and battle activity increase. Players participating in frequent PvP, alliance wars, or server-wide events should monitor both capacities before entering a major fight.
Tips for Optimizing Your Emergency Center
- Upgrade the Hospital first: The Emergency Center is a backup system. Improving your Hospital capacity reduces the number of troops that depend on Emergency Center rescue.
- Prepare for major battles: Check your Hospital and Emergency Center capacity before participating in prolonged combat or alliance events.
- Monitor the rescue cooldown: Avoid entering another high-casualty battle while the rescue function is unavailable, especially when both troop recovery buildings are already close to capacity.
- Research relevant technology: Construction, healing, and military research can support faster recovery and more efficient base development. The Last War Tech Center guide explains the building requirements for progressing through these systems.
- Use VIP benefits: Some VIP levels provide construction, healing, or progression bonuses. Review the Last War VIP levels and perks guide before deciding where to invest your VIP points.
- Improve troop efficiency: Stronger troop statistics and better formations can reduce unnecessary losses. The Last War troop stats guide covers the attributes that influence troop performance.
- Avoid fighting beyond your capacity: If your recovery buildings are full or unavailable, additional casualties may become permanent losses.
When Should You Upgrade the Emergency Center?
The Emergency Center should receive greater priority when your Hospital frequently reaches capacity or when you participate in battles that produce large numbers of casualties. If your troop losses remain low and your Hospital still has sufficient space, other buildings may provide more immediate value.
At higher account levels, even a small increase in rescued troop capacity can save significant training time and resources. Review your normal battle losses, troop count, and Hospital capacity before committing large amounts of Iron, Food, Coin, or Oil to the next upgrade.
How the Emergency Center Supports Account Progression
The Emergency Center does not directly increase troop attack or defense, but it helps protect the time and resources already invested in your army. Preserving more units after difficult battles can reduce retraining costs and allow your account to recover more quickly between wars and events.
Developing a high-level Headquarters, Hospital, Emergency Center, military research, and troop lineup can take months of consistent progression. Players who prefer to begin with established defensive infrastructure can explore a Last War Survival account for sale through Heaven Guardian. Available accounts may include upgraded recovery buildings, developed troops, stronger heroes, and advanced research, with lifetime warranty coverage and premium support for a safer purchase experience.
FAQs
Q: What happens when my Emergency Center is full?
A: Troops that exceed both your Hospital and Emergency Center limits may be permanently lost.
Q: Does the Emergency Center heal all troop types?
A: It can receive eligible fainted units regardless of troop type, subject to its ratio and capacity limits.
Q: How can I reduce the rescue cooldown?
A: Check available VIP benefits, research, items, and other active bonuses that may affect recovery or cooldown times.
Q: Is the Emergency Center useful in the late game?
A: Yes. Late-game accounts usually have larger armies and face battles with heavier casualties, making additional rescue capacity more valuable.
Q: Can I move the Emergency Center?
A: Individual buildings cannot normally be moved independently on the world map. Relocating your base moves its overall position rather than moving only the Emergency Center.
Q: Does alliance help affect Emergency Center upgrades?
A: Alliance assistance can help reduce building construction time, although it does not directly increase the building’s troop rescue capacity.
Q: When does the Emergency Center unlock?
A: The Emergency Center unlocks when your Headquarters reaches level 22.
Q: What is the maximum Fainted Unit Ratio?
A: Based on the listed upgrade values, the Fainted Unit Ratio reaches a maximum of 40%.
Q: Should I upgrade the Hospital or Emergency Center first?
A: The Hospital should usually remain the first priority because it is the primary destination for injured troops. The Emergency Center provides additional protection when Hospital capacity is exceeded.
Conclusion
The Emergency Center provides an additional layer of troop protection when your Hospital reaches its capacity in Last War Survival. Upgrading it improves the percentage and number of fainted units that can be preserved, which can reduce permanent troop losses after difficult battles.
Keep the Emergency Center balanced with your Hospital, research, troop development, and Headquarters level. Before participating in major wars or events, check both recovery capacities and the active rescue cooldown so your army is not exposed to avoidable losses.
Learn more about Last War on the official website.
