Whiteout Survival Brothers in Arms Guide: BIA Rules, Points & Best Tips

Brothers in Arms is Whiteout Survival’s monthly Kill Event, commonly shortened to BIA or KE. During the event, Chiefs earn points through PvP combat, with higher-level enemy troops providing more points than lower-level troops.

The scoring system itself is simple. The difficult part is participating efficiently without wasting troops, overflowing your Infirmary, violating your state’s NAP rules, or turning a small milestone push into an expensive war.

This Whiteout Survival Brothers in Arms guide explains how BIA works, its schedule, current troop point values, state rules, milestone and leaderboard rewards, the safest ways to score, F2P strategy, defensive play, and the most important mistakes to avoid.

What Is Brothers in Arms in Whiteout Survival?

Brothers in Arms is a PvP-focused milestone and ranking event.

Players also commonly call it:

• BIA
• KE
• Kill Event
• Brother in Arms

The main objective is to accumulate event points through battles involving other Chiefs’ troops.

Higher-tier troops are worth more points, which means a small fight against stronger troops can sometimes produce more points than a much larger fight against low-tier units.

However, BIA does not mean that every player in the state is automatically a legal target. State-specific NAP agreements and alliance rules remain extremely important.

Brothers in Arms Schedule

Brothers in Arms normally appears once per month during the week of the regular in-state Sunfire Castle Battle.

The game normally provides advance notice before the Kill Event begins.

Nevertheless, check the current Events screen rather than relying only on a monthly calendar because event timing can be adjusted.

How to Play Brothers in Arms Whiteout Survival

The basic BIA process is:

1. Check your state’s BIA and NAP rules.
2. Check your current milestone and leaderboard requirements.
3. Prepare your Infirmary and healing resources.
4. Choose a legal target.
5. Scout before attacking when possible.
6. Fight enemy troops.
7. Monitor your event points.
8. Heal before continuing.
9. Stop once your target reward no longer justifies the risk.

Brothers in Arms is not an event where attacking nonstop is automatically optimal.

The most efficient player is often the one who reaches a useful milestone with minimal permanent troop loss and then stops.

BIA Rules: Check Your State Before Attacking

Whiteout Survival does not provide one universal state-wide NAP rule set for Brothers in Arms.

Individual states usually create their own agreements.

For example, a state may decide:

• No attacks on NAP alliances.
• No attacks on the top 5 or top 10 alliances.
• Resource tile attacks are allowed.
• Resource tile attacks are forbidden.
• Cities outside NAP can be attacked.
• Unallied cities can be attacked.
• Only one or two attacks are allowed per City.
• Friendly point trading is allowed.
• All City attacks are banned.

These are examples, not universal game rules.

How to Get Points in Brothers in Arms

BIA rewards combat involving enemy troops.

The most reliable scoring method is defeating or severely injuring enemy troops in qualifying battles.

Higher troop levels are worth more points.

Brothers in Arms Point Chart

This explains why higher-tier targets are attractive for scoring.

However, a T11 target that destroys your march is not automatically better value than a controlled fight against lower-tier troops.

Always compare:

• Points earned
• Troops injured
• Permanent troop losses
• Healing resources
• Healing Speedups
• Risk of retaliation

Where Can You Score BIA Points?

Common scoring opportunities include:

• Enemy Cities
• Enemy troops gathering on resource tiles
• Castle Battle combat
• Fortress and Stronghold fighting
• Other qualifying PvP encounters shown by the current event rules

The important word is qualifying. Check the live BIA event description before building an entire scoring strategy around another PvP mode.

Best Safe Targets for Brothers in Arms

The best BIA target is not necessarily the weakest City you can find.

The best target is one that is:

• Allowed by state rules.
• Worth enough points.
• Low enough risk.
• Unlikely to trigger expensive retaliation.

1. State-Approved Friendly Battles

If your state allows organized point trading, a friendly battle can be one of the safest ways to reach milestone rewards.

Examples include:

• Trading hits with a consenting player.
• Using a farm or secondary account where permitted.
• Arranging controlled resource-tile battles.

Agree on the troop type, target location, number of hits, and stopping point beforehand.

2. Resource Gathering Tiles

Gathering troops can provide efficient points without needing to attack a City directly.

Advantages include:

• No City barricade burning.
• Easy troop visibility.
• Short battles.
• Simple controlled point trading when both players agree.

However, many states restrict or completely ban tile hitting during BIA.

Do not assume gathering troops are legal targets.

3. Inactive or Unallied Cities

When state rules permit City attacks, inactive or unallied Cities can sometimes provide points with less retaliation risk.

Always scout first.

An inactive-looking City may still contain:

• A large troop count.
• High-tier troops.
• Strong defensive Heroes.
• Reinforcements.
• Enough strength to cause permanent attacker losses.

4. Active Cities

Active Cities are significantly riskier.

Before attacking, ask:

• Does the state’s BIA rule allow this attack?
• Is the player in a protected alliance?
• Could they reinforce before I arrive?
• Will their alliance retaliate?
• Is my Infirmary ready?
• Are the potential points worth the losses?

For a difficult active City, an organized rally is usually safer than repeated solo attacks.

City Attacks vs Resource Tiles

Scout Before Every Important Attack

Scouting is one of the simplest ways to avoid an expensive mistake.

Check:

• Enemy troop quantity
• Troop tier
• Hero defense
• Possible reinforcements
• Available resources
• Overall Power

If the report looks significantly stronger than expected, skip the target.

BIA provides many opportunities across 48 hours. There is little reason to force one bad fight.

Keep Your Infirmary Ready

Your Infirmary should not already be close to capacity when BIA begins.

Before fighting:

1. Heal old wounded troops.
2. Prepare healing resources.
3. Keep some healing Speedups available.
4. Check whether your alliance will actively use Alliance Help.
5. Monitor your capacity after every significant fight.

A battle that looks affordable can become much more expensive once your normal recovery systems are overwhelmed.

Brothers in Arms Rewards

Brothers in Arms has two main reward systems:

1. Milestone Rewards
2. Leaderboard Rewards

BIA Milestone Rewards

Milestone rewards are the safest objective for most players because you know what score you need before committing more troops.

A commonly documented BIA format starts at:

1,000 points

and extends to approximately:

217,000 points

However, the official event documentation states that target points can change according to state age.

Therefore, use the current event screen for your exact milestone numbers.

Possible rewards can include:

• Gems
• Speedups
• Resources
• Hero Skill materials
• Other progression rewards tied to state age

How Far Should You Push?

Choose a milestone before you start serious PvP.

For example:

1. Check the reward you want.
2. Note the required points.
3. Estimate the number of battles required.
4. Set a maximum healing/resource budget.
5. Stop once the next reward is no longer worth the additional risk.

This is usually a better strategy than attacking until you run out of troops or Speedups.

Brothers in Arms Leaderboard Rewards

The currently documented BIA leaderboard rewards the top 100 Chiefs who meet the required minimum point threshold.

The current published benchmark is:

Top 100 with more than 4,000 points

In a competitive state, however, 4,000 points will rarely be enough for a high rank.

Your actual required score depends entirely on how aggressively other Chiefs participate.

Should You Push the BIA Leaderboard?

Leaderboard pushing makes sense when:

• Your account is strong enough to fight efficiently.
• You have plenty of troops.
• Your Infirmary is prepared.
• You have healing resources and Speedups.
• Your alliance supports aggressive BIA participation.
• Your state rules provide enough legal targets.

Consider stopping at milestones when:

• You are F2P or a low spender.
• Your troop count is already low.
• You need your troops for upcoming events.
• Your state has strict BIA restrictions.
• The ranking score is climbing faster than you can efficiently match.

Best Whiteout Survival Brothers in Arms Tips

1. Read the State Rules Before Friday Reset

This is more important than any combat tip.

Knowing legal targets prevents unnecessary alliance conflict.

2. Choose Your Milestone Before Fighting

Know your stopping point before the first attack.

3. Scout Cities First

Do not risk permanent troop losses against an unknown garrison.

4. Prefer Controlled Point Trades When Allowed

Friendly resource-tile battles can reduce the uncertainty of random PvP.

5. Keep the Infirmary Clear

Heal regularly rather than waiting until recovery becomes a problem.

6. Do Not Chase Revenge

A player attacking you does not automatically make a retaliation efficient.

Stay focused on your point target and state rules.

7. Use Sunfire Castle Fighting When You Were Already Planning to Participate

If your alliance is already fighting for Castle objectives during BIA weekend, those battles can generate event progress naturally.

Do not enter an expensive Castle fight solely because you need a small number of BIA points.

8. Stop When Recovery Costs Exceed the Reward

A few extra Gems or Speedups are not worth damaging your account before a more important event.

Best F2P Brothers in Arms Strategy

F2P players should focus on controlled milestone progress, not maximum aggression.

A practical strategy is:

1. Read your state’s BIA rules.
2. Select a realistic milestone reward.
3. Use consenting friendly battles if permitted.
4. Use legal gathering-tile targets when available.
5. Scout every City target.
6. Avoid fighting stronger active players unnecessarily.
7. Heal regularly.
8. Stop after reaching your target.

Remember that troops, healing resources, and Speedups have value in many other events.

Protecting those resources is often more valuable than forcing a leaderboard position.

How to Stay Safe During Brothers in Arms

You do not have to participate aggressively in BIA.

If your goal is simply to protect your account:

• Use a City Shield when necessary.
• Do not leave valuable troops on exposed resource tiles.
• Keep your Infirmary under control.
• Follow your alliance’s relocation instructions.
• Pay attention to World Chat and alliance alerts.
• Use Secured Alliance Gathering Nodes when available.

Secured Alliance Gathering Nodes are particularly useful because they allow alliance members to gather secured resources without exposing those squads to normal map attacks.

Does a City Shield Protect Gathering Troops?

Do not assume a City Shield makes exposed gathering squads safe.

If BIA rules in your state allow tile attacks, recall vulnerable gathering marches or use protected alliance gathering options.

Can You Get BIA Points While Defending?

The official Brothers in Arms Wiki describes the event as awarding progress through killing enemy troops or losing your own troops in qualifying combat.

However, older community references have disagreed about exactly how defensive scoring is displayed.

Therefore, if you want to use a defensive bait strategy:

1. Record your current BIA score.
2. Take one controlled qualifying battle.
3. Check the new score.
4. Only continue if the current event is crediting the result as expected.

This is safer than assuming an older guide or screenshot still matches the current scoring implementation.

Can You Score During Castle or Fortress Battle?

Castle and Fortress combat can provide BIA scoring opportunities because they involve large numbers of opposing troops.

However, these battles are much more expensive than controlled tile fights.

Only use them as a BIA strategy when:

• Your alliance already intends to fight.
• The battle matters for another strategic objective.
• You have enough troops and healing resources.
• Your BIA point gain is an additional benefit rather than the only reason for fighting.

Brothers in Arms vs Stand of Arms

Brothers in Arms and Stand of Arms are not the same event.

If you searched for “Stand of Arms” while looking for BIA, use the event title shown in your in-game calendar to confirm which event is active.

BIA vs State of Power

Brothers in Arms can feel similar to the combat phase of State of Power because both involve PvP and Kill Event-style scoring.

However, they are different events.

Normal BIA is an in-state event where you fight Chiefs from your own state according to the local rules established by that state.

State of Power creates cross-state warfare and uses a separate event structure.

Best Strategy for an Alliance

Good alliances plan BIA before it begins.

Leadership should ideally communicate:

• Which alliances are protected.
• Whether resource tiles can be attacked.
• Whether City attacks are allowed.
• Maximum attacks per City if applicable.
• Whether friendly point trading is permitted.
• How retaliation should be handled.
• Whether members should Shield while offline.

This prevents individual members from accidentally creating conflict for the whole alliance.

For more general coordination principles, see our Whiteout Survival Alliance guide.

Common Brothers in Arms Mistakes

Attacking Before Reading BIA Rules

The game may allow the attack while your state agreement does not.

Assuming Every Gathering Tile Is a Legal Target

Some states permit tile hitting during BIA, while others completely prohibit it.

Attacking Cities Without Scouting

An apparently inactive target can still contain enough high-tier troops to cause major losses.

Choosing Targets Only by Troop Tier

Higher-tier troops give more points, but a strong target can cost much more than the extra points are worth.

Playing With a Full Infirmary

Prepare recovery capacity before serious PvP.

Chasing Revenge Instead of Milestones

Emotional fights can consume far more resources than the event rewards provide.

Forcing Top 100 Rank as F2P

Check the current leaderboard first. If the score requirement is already extremely high, milestone rewards may offer better value.

Confusing BIA With Stand of Arms

They are separate events with different scoring systems.

FAQ

What is Brothers in Arms in Whiteout Survival?

Brothers in Arms, also called BIA or KE, is a monthly PvP Kill Event where Chiefs earn points through qualifying troop combat and compete for milestone and ranking rewards.

How long does Brothers in Arms last?

The current documented schedule runs from Friday 00:00 UTC to Sunday 00:00 UTC, for a total of 48 hours.

How often is Brothers in Arms?

Brothers in Arms normally appears once per month during the week of the regular in-state Sunfire Castle Battle.

How do you get points in Brothers in Arms?

You gain points through qualifying PvP combat involving enemy troops. Higher troop levels give more points, ranging from 1 point for Level 1 and 2 troops up to 15 points for Level 11 troops in the current published chart.

What are the best targets for BIA?

The best targets are legal under your state’s rules and provide good points with manageable risk. State-approved friendly tile battles are usually safer than random active-City attacks.

Do resource tile attacks count in Brothers in Arms?

Resource-tile combat is a documented way to earn points, but many states restrict or prohibit tile attacks. Check your state rules before attacking gathering troops.

What score do you need for BIA rewards?

A common documented milestone format starts at 1,000 points and reaches 217,000, while ranking rewards are listed for the top 100 Chiefs above 4,000 points. Exact milestones can vary with state age, so check your current event screen.

What should F2P players do during Brothers in Arms?

Focus on realistic milestone rewards, legal low-risk targets, friendly point trading when permitted, scouting, Infirmary management, and stopping before recovery costs become greater than the rewards.

Conclusion

Whiteout Survival Brothers in Arms is easiest to manage when you treat it as a controlled milestone event rather than an excuse to attack everything on the map.

The current event normally lasts 48 hours from Friday 00:00 UTC to Sunday 00:00 UTC during the regular Sunfire Castle week. Higher-tier troops give more BIA points, with the published chart currently reaching 15 points per Level 11 troop.

However, point efficiency is only one part of the event. State rules matter just as much. Check your NAP agreement before attacking Cities or resource tiles, scout uncertain targets, keep your Infirmary ready, and avoid fights that could trigger unnecessary retaliation.

For most F2P and low-spending players, milestone rewards should come before leaderboard rank. Set your point target, use controlled scoring opportunities where permitted, and stop once the additional healing and troop losses are no longer worth the next reward.

If you prefer not to participate in PvP, protect your City, avoid exposed gathering tiles, and use secured Alliance gathering options when available. There is no requirement to turn BIA weekend into a costly war.

For more event walkthroughs, PvP tips, and progression strategies, explore our Whiteout Survival guides.

Whiteout Survival can change Brothers in Arms schedules, troop point values, milestone requirements, ranking thresholds, and combat rules. State NAP agreements can also change between event runs, so always check both the current in-game event screen and your state rules before attacking.