The Hospital is the main wounded-unit recovery building in Last War Survival. Upgrading it increases the number of severely wounded units you can hold and heal instead of risking permanent troop losses when your recovery capacity is exceeded.
For players looking for Last War Hospital upgrade costs, each Hospital has a base Unit Limit of 650 at level 1, 1,100 at level 10, 1,600 at level 20, and 2,000 at level 30. Age of Oil upgrades raise that to 2,100 at level 35. You can also unlock a 4th Hospital through the Extra Hospitals research in the Defense Fortifications tech tree, giving active PvP players another important source of wounded-unit capacity.
★Quick Take: Hospital capacity should be treated as a safety buffer. Heal wounded units before entering another major fight, keep at least one Hospital progressing for Headquarters requirements, unlock the 4th Hospital when Defense Fortifications becomes available, and use the Emergency Center as overflow protection rather than as a replacement for Hospital capacity.
How the Hospital Works in Last War
Eligible severely wounded troops are sent to your Hospitals after battle. Those units can be healed and returned to your army instead of being replaced through troop training.
The important number is Unit Limit. This is the base number of wounded troops an individual Hospital can hold at its current level. If you own multiple Hospitals, each building contributes its own capacity, while research and other account bonuses can further increase your effective total.
When all available Hospital capacity is exhausted, additional eligible casualties can be at risk of permanent loss. After Headquarters level 22, the Emergency Center provides an additional recovery layer for some overflow troops, but it does not make Hospital capacity irrelevant.
Hospital Capacity Is Per Building
The Unit Limit in the upgrade table below applies to one Hospital. If several Hospitals are developed to similar levels, their combined base capacity is substantially larger.
For example, one level 30 Hospital has a base Unit Limit of 2,000. Four level 30 Hospitals would therefore provide 8,000 base building capacity before applicable research or other bonuses.
This is one reason the 4th Hospital can be an important PvP unlock: it adds another entire Hospital building rather than only increasing an existing Hospital by one level.
Last War Hospital Upgrade Costs and Levels 1–35
The following table lists the current community-documented base resource cost and Unit Limit for each Hospital level.
!Important: Treat these as base planning values. Research and account bonuses can change the requirements displayed in your game. Current public databases also disagree on some Hospital construction timers, so always use your live upgrade screen as the final authority for time and resource requirements.
| Hospital Level | Iron | Food | Coin | Oil | Unit Limit |
|---|---|---|---|---|---|
| 1 | 30 | 90 | – | – | 650 |
| 2 | 75 | 230 | – | – | 700 |
| 3 | 340 | 1,000 | – | – | 750 |
| 4 | 840 | 2,500 | – | – | 800 |
| 5 | 6,800 | 20,000 | – | – | 850 |
| 6 | 30,000 | 91,000 | – | – | 900 |
| 7 | 61,000 | 180,000 | – | – | 950 |
| 8 | 97,000 | 290,000 | – | – | 1,000 |
| 9 | 160,000 | 470,000 | 120,000 | – | 1,050 |
| 10 | 190,000 | 560,000 | 150,000 | – | 1,100 |
| 11 | 470,000 | 1,400,000 | 370,000 | – | 1,150 |
| 12 | 790,000 | 2,400,000 | 630,000 | – | 1,200 |
| 13 | 870,000 | 2,600,000 | 700,000 | – | 1,250 |
| 14 | 1,200,000 | 3,700,000 | 980,000 | – | 1,300 |
| 15 | 1,700,000 | 5,100,000 | 1,400,000 | – | 1,350 |
| 16 | 3,000,000 | 9,100,000 | 2,400,000 | – | 1,400 |
| 17 | 4,000,000 | 12,000,000 | 3,200,000 | – | 1,450 |
| 18 | 6,900,000 | 21,000,000 | 5,500,000 | – | 1,500 |
| 19 | 8,300,000 | 25,000,000 | 6,600,000 | – | 1,550 |
| 20 | 15,000,000 | 45,000,000 | 12,000,000 | – | 1,600 |
| 21 | 21,000,000 | 63,000,000 | 17,000,000 | – | 1,640 |
| 22 | 27,000,000 | 82,000,000 | 22,000,000 | – | 1,680 |
| 23 | 34,000,000 | 100,000,000 | 27,000,000 | – | 1,720 |
| 24 | 43,000,000 | 130,000,000 | 34,000,000 | – | 1,760 |
| 25 | 72,000,000 | 220,000,000 | 58,000,000 | – | 1,800 |
| 26 | 100,000,000 | 300,000,000 | 81,000,000 | – | 1,840 |
| 27 | 130,000,000 | 390,000,000 | 110,000,000 | – | 1,880 |
| 28 | 180,000,000 | 550,000,000 | 150,000,000 | – | 1,920 |
| 29 | 260,000,000 | 770,000,000 | 210,000,000 | – | 1,960 |
| 30 | 360,000,000 | 1,100,000,000 | 290,000,000 | – | 2,000 |
| 31 | 400,000,000 | 1,200,000,000 | 320,000,000 | 270,000 | 2,020 |
| 32 | 440,000,000 | 1,300,000,000 | 350,000,000 | 432,000 | 2,040 |
| 33 | 480,000,000 | 1,400,000,000 | 380,000,000 | 734,400 | 2,060 |
| 34 | 500,000,000 | 1,500,000,000 | 400,000,000 | 1,321,920 | 2,080 |
| 35 | 530,000,000 | 1,600,000,000 | 420,000,000 | 2,643,840 | 2,100 |
What Changes at Hospital Levels 31–35?
Levels above 30 belong to the post-Season 2 Age of Oil progression. You need access to the Age of Oil technology tree and the relevant HQ Expansion research before buildings can advance beyond level 30.
These Hospital upgrades introduce Oil as an additional resource. Capacity continues increasing, but only by 20 units per level: from 2,000 at level 30 to 2,100 at level 35.
That makes late-game Hospital upgrades a more situational investment. They remain important when required for Headquarters progression or when you regularly fill your Hospitals, but the capacity gain should be compared with other expensive Age of Oil buildings and research.
Hospital Levels Required for Headquarters Upgrades
The Hospital is not only a recovery building. It also appears as a prerequisite at several Headquarters milestones, which means ignoring it completely can block your base progression.
| Headquarters Upgrade | Hospital Requirement |
|---|---|
| HQ 10 | Hospital Level 9 |
| HQ 18 | Hospital Level 17 |
| HQ 26 | Hospital Level 25 |
| HQ 33 | Hospital Level 32 |
| HQ 35 | Hospital Level 34 |
If you are planning an HQ push, check the Last War Headquarters upgrade guide before spending resources elsewhere. Pre-building the next Hospital prerequisite can prevent a long delay when your Headquarters becomes available to upgrade.
How to Get the 4th Hospital in Last War
The 4th Hospital is unlocked through research, not by reaching a particular Hospital building level.
Open the Tech Center and progress far enough to access the Defense Fortifications research tree. The research node you are looking for is called Extra Hospitals, which allows you to build an additional Hospital.
Current research databases place Extra Hospitals at the beginning of the Defense Fortifications tree. Community references commonly associate access to the advanced Defense Fortifications tree with roughly 40% Special Forces research progress, but this gate has changed during the game’s history. Check the requirement shown in your Tech Center rather than spending resources based solely on an old percentage.
✓Recommendation: If you participate heavily in PvP, unlocking the 4th Hospital is usually more valuable than pushing several small capacity upgrades on a single Hospital. It creates another recovery building that can then be upgraded independently. F2P players should still balance the Valor Badge and research path against progress toward major goals such as higher troop tiers.
Should You Prioritize the 4th Hospital?
For active fighters, it is a strong defensive progression target. More total Hospital capacity gives you additional room for wounded units during long PvP sessions, server wars, and other battles with repeated casualties.
For players who fight less frequently, rushing advanced research exclusively for the extra Hospital may be unnecessary. Continue progressing Special Forces and other important research while monitoring how often your existing Hospitals actually fill.
Hospital vs. Emergency Center
The Hospital and Emergency Center protect troops in different stages of the casualty process.
| Building | Main Purpose | When It Matters |
|---|---|---|
| Hospital | Stores and heals eligible wounded units | Primary recovery capacity after battles |
| Emergency Center | Recovers a percentage of eligible troops after Hospital overflow | Backup protection when Hospitals are full |
The Emergency Center unlocks at Headquarters level 22. Current progression data starts it with a 21% Fainted Unit Ratio and increases that ratio until it reaches 40% at level 20. It also has its own Fainted Unit Capacity and rescue cooldown.
This means the Emergency Center is not simply another Hospital. It only becomes relevant after your normal Hospital system has failed to absorb all eligible wounded troops, and it does not rescue every overflow casualty.
Which Should You Upgrade First?
Hospital capacity should generally come first because it is the normal destination for wounded units. The Emergency Center is additional insurance for situations where that capacity is exceeded.
A sensible order is:
- Keep enough Hospital capacity for your usual battle losses.
- Unlock and develop the Emergency Center after HQ 22.
- Work toward the 4th Hospital if you regularly participate in high-casualty PvP.
- Continue improving both systems as your troop count and combat activity grow.
What Is the Last War Hospital Trick?
The commonly discussed Last War Hospital trick is batch healing with Alliance Help. It does not create extra capacity or make wounded troops free to heal. Instead, it can dramatically shorten healing queues when many alliance members are online.
Each Alliance Help reduces the active healing timer by 0.5%, with a minimum reduction of one minute per help. The minimum becomes especially useful on short healing queues.
How to Batch Heal With Alliance Help
- Check your Alliance Center to see how many helps you can currently receive.
- Instead of healing every wounded unit in one long queue, select a smaller batch.
- Aim for a healing timer short enough that one full round of alliance helps can remove most or all of it.
- Start healing and tap the Alliance Help icon.
- Wait for alliance members to complete the help requests.
- Repeat with another batch until your Hospitals are clear.
For example, a player who can receive around 25 helps can test a healing batch close to 25 minutes. Because each qualifying help removes at least one minute, an active alliance can complete that batch extremely quickly. Your ideal batch size will vary with your Alliance Center, healing research, troop tier, and available helpers.
The method works best when many alliance members are online. The Alliance Support Hub guide explains how alliance assistance fits into broader building, research, and recovery progression.
When Should You Upgrade the Hospital?
Upgrade It When You Frequently Approach Capacity
If your Hospitals regularly become nearly full during PvP, capacity is already a real bottleneck. Upgrading before the next major battle is safer than waiting until wounded units are overflowing.
Upgrade It Before an HQ Requirement Blocks You
Hospital level 9, 17, 25, 32, and 34 are especially relevant because those levels appear in later Headquarters requirements. Plan them alongside your HQ path rather than beginning them only after the prerequisite appears.
Active PvP Players Should Value Capacity More
Players who participate in repeated base attacks, defenses, alliance wars, and server-wide battles have much more reason to maintain extra recovery capacity than players who mostly focus on PvE and development.
F2P Players Should Avoid Over-Upgrading Too Early
A bigger Hospital is useful, but unused capacity provides little immediate benefit. If you rarely come close to filling your Hospitals and the next level is not required for Headquarters progression, your resources may produce more value in the Headquarters chain, Tech Center, troops, or combat research.
How to Prepare Your Hospitals Before PvP
Hospital management starts before the first battle, not after your capacity is already full.
- Clear existing wounded troops: Enter major PvP with as much free capacity as possible.
- Check all Hospital levels: Do not focus only on your highest-level Hospital while leaving the others far behind if you depend on their combined capacity.
- Know your Emergency Center status: Confirm available overflow capacity and any applicable rescue cooldown.
- Keep healing resources available: Heavy combat can consume substantial Food, Iron, and Coin through repeated recovery.
- Save healing speedups: They are more valuable when you urgently need to recycle troops during prolonged combat.
- Coordinate batch healing: An active alliance can shorten repeated healing queues through Alliance Help.
- Stop fighting when recovery is overwhelmed: Continuing to take casualties with full Hospitals creates unnecessary risk.
Ways to Improve Hospital Efficiency
Use Healing and Capacity Research
The Development research tree contains several Hospital-related technologies, including Infirmary Expansion, Efficient Healing, and Rapid Field Dressing. Defense Fortifications also contains additional recovery-focused research such as Infirmary Expansion and Efficient Healing.
These bonuses can make improving your recovery system more efficient than relying on building levels alone.
Plan Large Upgrades Around Events
If a building or power-increase event rewards construction progress, a Hospital upgrade can contribute to your event score while advancing your base. Review the Last War Event Hub before using large amounts of building speedups.
Maintain Your Resource Economy
Higher Hospital levels become expensive, and healing also consumes resources. Keep your Iron Mines, Farmlands, and Gold Mines progressing alongside your military infrastructure.
Review Relevant VIP Benefits
VIP progression can provide account-wide benefits that affect development and recovery efficiency. Check the Last War VIP levels and perks guide before spending resources specifically to compensate for a bottleneck another bonus can reduce.
Reduce Casualties Instead of Only Increasing Capacity
Hospital upgrades protect your army after damage has already happened. Stronger heroes, troop statistics, research, scouting, and better target selection can reduce how many troops become wounded in the first place.
For more detail on combat attributes and troop development, see the Last War troop stats guide.
Common Hospital Mistakes
- Entering battle with a nearly full Hospital: This leaves very little room for another casualty wave.
- Assuming the Emergency Center saves every overflow troop: It only rescues a percentage of eligible overflow and has its own capacity.
- Ignoring the 4th Hospital research: Active PvP players can miss a major capacity increase by overlooking Defense Fortifications.
- Healing everything in one enormous queue: During active combat, smaller batches can take much better advantage of Alliance Help.
- Rushing every Hospital to the maximum level: Capacity should be balanced against HQ, research, troop, and other building priorities.
- Forgetting HQ prerequisites: Hospital levels 9, 17, 25, 32, and 34 matter for specific Headquarters upgrades.
- Trusting old construction-time tables blindly: Bonuses and database differences can make published timers unreliable for your account.
Hospital Progression and Account Development
Hospital capacity does not directly increase your squad’s Attack or Defense, but it protects resources and training time already invested in your troops. Recovering an existing high-tier army is generally preferable to repeatedly replacing units lost because recovery capacity was exhausted.
This becomes increasingly important for developed accounts with larger armies and more frequent PvP participation. Players who prefer to begin with more established progression can optionally browse Last War accounts for sale. Check each listing’s Headquarters, Hospital, Emergency Center, research, troop tiers, and hero progression individually rather than assuming specific recovery upgrades are included.
FAQs
What happens when the Hospital is full in Last War?
When your normal Hospital capacity is full, eligible additional casualties can overflow. After the Emergency Center is unlocked, it can recover a percentage of eligible overflow troops up to its own capacity. Casualties that are not accommodated by the available recovery systems may be permanently lost.
How do I increase Hospital capacity?
Upgrade each Hospital to raise its Unit Limit, develop Hospital-capacity research such as Infirmary Expansion, and unlock the extra Hospital through the Defense Fortifications research tree when it becomes available.
How do I get the 4th Hospital in Last War?
Research the Extra Hospitals node in the Defense Fortifications tech tree. It is a research unlock rather than a reward for reaching a specific Hospital building level. Check your Tech Center for the current prerequisite to open Defense Fortifications.
What is the Last War Hospital trick?
The Hospital trick usually refers to healing wounded troops in short batches and requesting Alliance Help for every batch. Since each help removes 0.5% of the timer or at least one minute, an active alliance can finish carefully sized healing batches much faster than one large queue.
Should I upgrade the Hospital or Emergency Center first?
Prioritize enough Hospital capacity to handle your normal wounded troops because it is the primary recovery system. The Emergency Center should then be developed as additional overflow protection, especially for active PvP players.
Is Hospital level 31–35 worth upgrading?
It depends on your progression. Levels 31–35 require Age of Oil access and Oil, while capacity only increases from 2,000 to 2,100 per Hospital across those five levels. They become more important when needed for Headquarters progression or when late-game PvP regularly fills your recovery capacity.
Conclusion
The Hospital is one of the most important protection buildings for players who fight regularly in Last War Survival. Upgrade it when capacity becomes a bottleneck, prepare Hospital prerequisites before major HQ pushes, and work toward the 4th Hospital if your PvP activity justifies the additional recovery space.
Keep your Hospitals clear before major battles, use the Emergency Center as backup protection, and take advantage of batch healing with Alliance Help to return troops to combat faster. For more building guides, PvP strategies, and progression advice, visit the Heaven Guardian Last War Survival guides.
