Winning a war in Stellaris requires more than just powerful battleships and dominant orbital bombardment. While your main fleet secures space superiority, your empire's actual expansion and conquest hinge entirely on ground invasions. Mastering transport ships—the unarmed vessels that ferry your assault armies across the stars—separates casual players from galactic conquerors. Without a proper understanding of how to manage, escort, and protect these vulnerable fleets, your hard-won space victories will stall out at the enemy's doorstep.
Transport ships operate outside the normal ship designer. You don't queue them up at a starbase shipyard or customize their loadouts with high-end weapons. Instead, they materialize automatically whenever you recruit assault armies from your planets or use specialized starbase structures like the Army Hub. Understanding this distinct mechanical workflow is vital for keeping your military campaigns moving forward without draining your economy or leaving your forces exposed to roaming enemy raiders.
How Transport Ships Function in Stellaris
When you train an assault army, clone army, or xenomorph army, the game creates a dedicated transport ship in orbit above that world. Each transport comes with a basic hull, standard armor, and an automatic update loop that equips the highest-tier defensive components and cloaking technology you've researched. They cost zero monthly energy upkeep beyond the maintenance of the troops inside them, making them remarkably cheap to keep idling in space until you need them.
Because they lack weapons entirely, transports cannot fight back if intercepted by enemy warships. They possess high base evasion and move at speeds comparable to corvettes, but a direct collision with a hostile fleet results in total annihilation for both the ships and the battalions onboard. You have to group them into cohesive armadas and coordinate their movements alongside your armed military fleets.
Streamlining Recruitment and Logistics
Managing dozens of individual planets to raise a massive invasion force becomes tedious during mid-game and late-game galactic wars. Relying on default pop-ups or clicking planet by planet wastes valuable time.
- Use Army Hubs: Build Army Hub modules on your starbases to centralize and speed up your troop production across entire sectors.
- Enable Rally Points: Turn on the Rally Troops setting for your main transport fleet so newly trained armies automatically fly toward your primary staging area without manual intervention.
- Toggle Orbit Deployment: Switch on the Deploy In Orbit feature on your major recruitment colony screens to instantly push new units into space rather than letting them pile up on the planet's surface.
- Merge Constantly: Select separate transport clusters and hit the merge button to combine them into a single, easy-to-command armada.
Executing a Successful Planetary Invasion
Conquering a heavily fortified alien world requires a strict sequence of tactical steps. Skipping any part of this process leads to heavy casualties or a complete failure to capture the colony.
- Secure the System: Destroy or force the retreat of all hostile military fleets in the target system and neutralize the local starbase. An active enemy starbase blocks ground invasions entirely.
- Bombard the Defenses: Move a military fleet into orbit and begin orbital bombardment. This wears down the planet's fortification health, defense army morale, and pop counts, significantly reducing the strength of the planetary defenders.
- Bring in the Transports: Order your merged transport fleet into orbit around the target world.
- Issue the Land Order: Select the transport fleet, click the Land Armies command on the planet interface, and watch your troops touch down over a ten-day deployment window.
Ground combat resolves automatically based on the total health, damage, and morale of your attacking assault armies versus the planet's defense armies. You can monitor the progress directly from the planetary view.
Common Mistakes to Avoid
Many empire builders lose entire wars due to preventable logistical errors involving their transport fleets.
One frequent mistake is leaving transport fleets on passive stances deep inside contested territory. While transports default to passive behavior, switching them to Aggressive stance allows them to automatically follow friendly military fleets and land on enemy planets when the local odds favor success. However, leaving them completely unescorted while moving through enemy-controlled hyperlanes is a fatal gamble. Always keep a strong combat fleet moving directly alongside or ahead of your transports.
Another error is underestimating the defensive strength of late-game planetary structures like Fortresses. Planets heavily upgraded with defensive buildings feature massive garrison counts and FTL inhibitors. Sending a handful of basic baseline human or mammalian troops against a fortified world with dozens of clone commandos or xenomorphs results in a swift massacre. Match your army composition and total numbers to the planet's displayed defensive power before committing to an invasion.
You should also check out the official Paradox Stellaris Wiki for deep mechanical breakdowns on ship components, and review community discussions on platforms like the Paradox Interactive Forums to stay updated on balance changes and tactical meta shifts.
Frequently Asked Questions
Can transport ships attack enemy stations or fleets?
No. Transport ships are completely unarmed and possess zero offensive combat capability. They cannot fire weapons, engage hostile fleets, or damage starbases. If they enter a system with hostile military ships without an escort, they will be destroyed immediately.
Why can't I find transport ships in the ship designer?
Transport ships use a hardcoded hull type that is excluded from the standard ship designer. The game automatically updates their defensive components, armor, and cloaking tech based on your empire's current technology level, meaning you never have to manually refit them.
How do I stop transport ships from getting lost or picked off?
Always merge your scattered transport ships into a single unified fleet. Assign them to follow your primary attack fleet using the aggressive fleet stance, or manually path them strictly through secure, fully-controlled starbase systems behind your main frontline navy.
What determines the winner of a ground battle?
Ground combat compares the health, morale, damage output, and special traits of your attacking assault armies against the planet's defense armies. Bombarding the planet beforehand, picking powerful species traits, and bringing overwhelming numerical superiority ensure victory.
