> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pandor.gg/llms.txt
> Use this file to discover all available pages before exploring further.

# Coalitions

> Founding, joining and leaving a coalition, the Leader, reinforcements and the campaign planner.

A coalition is a team of planets. Members can send troops to defend each other, and plan strikes where their fleets land together.

## Founding a coalition

On the **Coalition deck**, tap **Start one**.

* You need production level 5: your Dust Reactor at level 5.
* Pick a coalition name of up to 32 characters. Names are first come, first served.
* You become the coalition's **Leader**.

Starting one is free. A planet already in a coalition can't start another.

## Joining

On the Coalition deck, choose **Or ask to join one** and pick a coalition. Your request shows as **Request sent** until the Leader approves it. You can withdraw it before then.

* There's no level requirement to join.
* A coalition holds up to 500 members.
* A planet can be in one coalition at a time.
* Joining always starts with a request from the Commander who wants in. The Leader can't invite you.

## The Leader

The Commander who starts a coalition is its Leader. Only the Leader can:

* approve requests to join;
* remove a member (but not themselves).

<Warning>
  The Leader's seat can't be handed over. If the Leader leaves, the seat doesn't pass to anyone: the coalition still names the old Leader's world. Leaders, think before you leave.
</Warning>

## Leaving

Any member can leave at any time, for free.

## Reinforcements

You can send troops to defend a coalition-mate's world. On the **Galaxy chart**, tap their world and choose **Reinforce**. It's free.

* While they fly, they're on your upkeep.
* When they land, the host's RHEA takes them in, and the host pays their upkeep from then on.
* A world can host up to 16 groups of reinforcements.
* They defend alongside the host's own troops, each group with its own species' bonus.
* When RHEA defends the host, their numbers are declared with the host's garrison, and they take the same share of losses.

<Warning>
  Reinforcements can't be brought home. Once they land, they stay with the host.
</Warning>

## Coalition-mates can still attack you

A coalition doesn't stop its own members from attacking each other by hand. Only the campaign planner refuses to target a coalition-mate.

## The campaign planner

The campaign planner is a [premium](/ore/premium) tool for **coalition strikes**: several fleets that land on one target at the same moment and fight as one battle. See [combined attacks](/war/raids#combined-attacks).

### Plan a strike

Tap **Plan a strike**, then choose a target, a landing time, and **Raid** or **Assault**. Your plan becomes an operation with a codename, such as Operation Ember.

* Any Commander with premium can plan one, in a coalition or alone. As the app says: "No coalition yet: you can still plan a strike alone."
* The target can't be a coalition-mate.
* The earliest landing time is your fleet's travel time plus a few minutes for RHEA to send the order. There's no latest.

### Join with my fleet

Coalition-mates with premium can tap **Join with my fleet**.

* An operation takes up to 13 fleets, one per Commander. The screen shows how many of the 13 have joined.
* Ordinary attacks landing on the same target at the same moment, in the same mode, use up places from the 13 too.
* An operation planned by a Commander with no coalition can't be joined.

### How it fires

Each fleet leaves on its own clock, timed so that every fleet lands together.

* Your troops stay home, defending, until RHEA sends your order. She sends it a few minutes before your fleet has to leave: about 5 minutes 40 seconds.
* RHEA checks your troops when you plan and when you join, but nothing is set aside. Keep enough at home until your fleet goes.
* If a battle is landing on your own planet when it's time to go, RHEA holds your fleet.
* You see your own fleet in an operation, never an ally's: "Their fleet is theirs to know."

### Changing plans

* **Stand my fleet down** takes your fleet out, as long as it hasn't left.
* The Commander who planned the operation can **Call it off**. Fleets still at home stand down, but a fleet already away keeps going.
* If your premium ends, your fleets that haven't left drop out.