Sarah is a backline Aircraft support hero in Last War: Survival who improves team damage through ATK buffs and bonuses against monsters. Her strongest use cases are pure Aircraft formations and PvE modes where her monster-related effects can contribute throughout the fight. She can also be promoted from SSR to UR in Season 4, but that upgrade does not automatically make her a priority investment for every account.
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The main problem is competition. Marshall fills a similar support slot and performs better across a wider range of teams and game modes, so Sarah is usually a temporary or specialized option rather than a universal endgame choice. She makes the most sense when Marshall is unavailable, underdeveloped, or unable to fit into a formation without breaking the full Aircraft type bonus.
Is Sarah Worth Building in Last War Survival?
Sarah is worth using when your account needs an Aircraft support and does not already have a developed Marshall. She provides backline ATK buffs, helps against PvE monsters, and allows a five-Aircraft squad to keep its 20% type bonus. These advantages give her a clear role in Campaign stages, Zombie Defense, World Boss battles, and other monster-focused content.
Her value falls sharply outside those situations. Monster damage bonuses do not help in PvP, while mixed formations remove one of the strongest reasons to select her over Marshall. Players who are still building their main damage dealers, frontline heroes, or primary support should avoid spending core resources on Sarah unless she directly completes an important Aircraft team.
| Category | Sarah’s Value |
|---|---|
| Role | Backline Aircraft support |
| Rarity | SSR with UR promotion available in Season 4 |
| Best Content | PvE Campaign, Zombie Defense, World Boss, and monster battles |
| Best Formation | Pure Aircraft team |
| Main Competition | Marshall |
| Investment Level | Low unless she fills a specific Aircraft or PvE role |
| Exclusive Weapon | None |
Sarah’s Role and Skill Priority
Sarah is not designed to carry the formation through her own damage. Her Auto Attack provides basic backline damage, but most of her usefulness comes from increasing the output of other heroes. The backline ATK effect is the most reliable part of her kit because it supports the team in every mode where she is used, while the monster bonus becomes valuable only when the enemy qualifies for it.
Her UR promotion adds Promotion Synergy, which grants team stat benefits based on other promoted heroes. This effect becomes more useful on accounts that already have several promoted characters, but it offers limited value when Sarah is the only hero following that progression path. Promoting her too early can therefore consume important resources without creating a meaningful immediate upgrade.
Best Skill Upgrade Order
Sarah can begin upgrading skills after reaching 2-Star, with skill progression handled in five-level steps. Since later upgrades consume far more Skill Medals, raising every ability evenly can leave the hero partially developed without improving the part of her kit that earned her a team slot. Focus first on the buffs that affect the entire formation, then invest in her more situational effects.
- Backline Buffs: Upgrade this first because increasing backline ATK is Sarah’s main job and her most consistent contribution.
- Monster Damage: Raise this second when Campaign, Zombie Defense, World Boss, or similar PvE content is a priority.
- Promotion Synergy: Invest after the core effects, especially when the account already uses multiple promoted UR heroes.
- Auto Attack: Leave this for last because Sarah’s personal basic damage is not the main reason to field her.
Resource-limited players should finish Backline Buffs before spreading medals across the rest of the kit. Monster Damage is a useful follow-up for a PvE-focused account, but it should not be treated as a general-purpose damage increase. Promotion Synergy can wait until the account is developed enough to activate its intended team interaction.
Best Gear for Sarah
Sarah’s gear should be built around realistic account progression rather than an immediate push toward maximum levels. Crafting higher-rarity equipment and upgrading it with Upgrade Ore becomes increasingly expensive, and those same materials may be needed by stronger core heroes. A minimum setup is enough to make her functional, while the optimum setup represents the point where further spending begins to offer weaker value for the cost.
| Gear Slot | Minimum Build | Optimum Build |
|---|---|---|
| Cannon | M4-A Destroyer Cannon — Level 30 | M6-A Puma Cannon — Level 40 |
| Armor | M3 Armor — Level 20 | M5-A Guard Reactive Armor — Level 40 |
| Data Chip | M4-A Jackal Data Chip — Level 30 | M6-A Athenas Crown Data Chip — Level 40 |
| Radar | M3 Radar — Level 20 | M5-A Predator Radar — Level 40 |
| Exclusive Weapon | Not available | Not available |
The minimum build is the sensible stopping point when Sarah is covering a temporary support gap. It gives her a usable gear set without demanding the same investment as a main damage dealer or permanent frontline hero. The optimum Level 40 setup is better suited to an established Aircraft formation where she has a long-term role and the account can afford the extra Ore.
Sarah currently has no Exclusive Weapon, and there is no confirmed guarantee that she will receive one. Because she can be promoted from Epic to Legendary rarity, her progression does not follow the same exclusive-weapon path as every native high-rarity hero. Do not reserve materials or plan the entire build around an upgrade that is not available.
Best Aircraft Team With Sarah
The clearest reason to use Sarah is a full Aircraft formation. Lucius and Carlie hold the frontline, while DVA and Morrison provide backline damage alongside Sarah’s support. This setup keeps all five positions within the Aircraft type, preserving the 20% formation bonus while allowing her to strengthen the back row.
| Position | Hero | Function |
|---|---|---|
| Frontline | Lucius | Frontline Aircraft hero |
| Frontline | Carlie | Frontline Aircraft hero |
| Backline | DVA | Backline damage |
| Backline | Morrison | Backline damage |
| Backline | Sarah | ATK support and monster damage bonuses |
Sarah’s position in this squad is practical rather than irreplaceable. Her buffs improve the two backline attackers, and her Aircraft typing keeps the formation bonus active, but she does not transform the team through personal damage. The setup is strongest when those two advantages matter more than the broader support Marshall would provide.
Sarah vs Marshall
Marshall is the better support in most situations because he offers stronger team utility, greater formation flexibility, and a higher long-term ceiling. Sarah cannot match that versatility, particularly in PvP or mixed formations where her monster bonuses and Aircraft typing lose much of their importance. Once Marshall reaches 2-Star or higher and is properly developed, he will usually take her place.
Sarah still has a few advantages. She is accessible through normal summons, can follow an SSR-to-UR promotion path, provides direct value against monsters, and preserves the 20% type bonus in a pure Aircraft formation. Replacing her with Marshall may improve support quality, but it also breaks the five-Aircraft setup, so the better choice depends on how much that formation bonus contributes to the current squad.
| Comparison | Sarah | Marshall |
|---|---|---|
| Pure Aircraft Formation | Maintains the 20% type bonus | Breaks the full Aircraft lineup |
| PvE Monster Content | Provides monster damage bonuses | More general support |
| PvP | Limited because monster bonuses do not apply | Better and more flexible |
| Formation Flexibility | Best in pure Aircraft squads | Fits more team types |
| Investment Ceiling | Situational | Higher |
Accounts without Marshall can safely use Sarah as their Aircraft support, especially when she already has stars and usable gear. There is no need to abandon a functioning build immediately, but major future investment should be reviewed once Marshall becomes available. Players with limited materials will usually gain more from resolving their core heroes than from pushing both supports at the same time.
How Far Should You Invest in Sarah?
Free-to-play players should keep the investment low unless Sarah is required to complete their main Aircraft squad. A minimum gear build and focused upgrades into Backline Buffs can give her enough value without draining Skill Medals, Universal Shards, or Upgrade Ore. Building her beyond that point is difficult to justify when Marshall or stronger core heroes still need resources.
Low spenders are also likely to treat her as a backup because they have a better chance of developing Marshall. Higher-spending accounts may find a narrow place for Sarah in an optimized pure Aircraft formation, but even there she remains a specialist rather than a universal support. Her UR promotion becomes more reasonable only when the account already has several promoted heroes and can make use of Promotion Synergy.
Common Sarah Build Mistakes
- Spending heavily on Sarah after developing Marshall to 2-Star or higher.
- Using her in PvP and expecting monster-related bonuses to activate.
- Placing her in a mixed formation where she no longer preserves the full Aircraft bonus.
- Upgrading Auto Attack before completing her core backline support skill.
- Promoting her to UR without other promoted heroes that can support Promotion Synergy.
- Pushing all four gear pieces toward the optimum build while stronger core heroes remain unfinished.
The most expensive mistake is treating Sarah like a mandatory endgame support. She is useful when the formation has a clear need for her typing or PvE bonuses, but that does not make every possible upgrade efficient. Build the part of her kit that solves your current problem, then stop before the cost begins competing with more important heroes.
Sarah Build FAQ
What is the best skill to upgrade first for Sarah?
Backline Buffs should be upgraded first because increasing the ATK of backline heroes is her main function. It applies more consistently than her monster-related bonus and does not depend on UR promotion synergy. Auto Attack should remain the lowest priority.
Should I promote Sarah from SSR to UR?
The UR promotion is situational rather than essential. Promotion Synergy becomes more useful when the team already includes multiple promoted heroes, so an early promotion may not provide enough value for its resource cost. Players still developing core heroes should delay this upgrade.
Is Sarah better than Marshall in Last War Survival?
Marshall is better in most content because he provides stronger and more flexible support. Sarah has an advantage in pure Aircraft formations because she preserves the 20% type bonus, and she also contributes additional value against PvE monsters. Use her when those benefits matter more than Marshall’s broader utility.
Does Sarah work well in PvP?
Sarah is not a strong PvP investment because her monster damage effects do not apply there. She can still provide backline ATK support, but that alone usually does not justify choosing her over Marshall. Her best performance remains in Aircraft-focused PvE content.
Does Sarah have an Exclusive Weapon?
Sarah does not have an Exclusive Weapon. There is also no confirmed information showing that one will be added later. Her current build should therefore use the standard Cannon, Armor, Data Chip, and Radar progression.

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Jul 30, 2026
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