This article covers the Canon version of this subject.  Click here for Wookieepedia's article on the Legends version of this subject. 
Z-95 Headhunter

Content approaching. Chapter 4: Sanctuary, StarWars-DatabankII AT-ST Raider in the Databank (backup link)–class.

Parts of this article are no longer up to date.

Please update the article to include missing information, and remove this template when finished.

"Affirmative, AT-ST support is on the way."
―An Imperial technician[8]

The All Terrain Scout Transport (AT-ST), also known as a Scout Transport, Scout Walker, or derisively as a chicken walker, was a lightweight, bipedal walker used by the ground forces of the Galactic Empire. Later, the First Order used an updated variant of the AT-ST within their military.


"The AT-ST kept spitting lasers at us, and we kept sinking lower and lower into the snow. Each blast took another bite out of the lip of the trench."
Chanda Bethari describes an AT-ST firing on Hoth[13]

A partial side view of an AT-ST

The All Terrain Scout Transport (abbreviated to AT-ST) was a scout and reconnaissance light walker[4] of the Galactic Empire's All-terrain vehicle line.[8] It consisted of an armored command and control cabin mounted on two gyro-stabilized legs and was utilized for battle line support, antipersonnel hunting[4] and troop support. They were also commonly used to screen the flanks of larger assault walkers for major ground operations,[5] during which they supported heavier walkers such as AT-ATs by eliminating pockets of resistance and clearing out denser terrain such as small canyons and cities[4] along the path of a planned invasion route.[14]

The command cabin featured two armored viewports which were deliberately set to give any viewer the unsettling sensation of staring into the face of a soulless beast or oversized combat droid, despite not actually being needed due to the AT-STs extensive sensor package.[5] Inside the control cabin, the command module featured multiple holoprojectors[4] which displayed a holographic 360-degree view of the combat zone. The cabin (or "head") itself was capable of rotating 240 degrees side to side, greatly benefiting the gunner's target-acquisition abilities and capabilities for destruction.[6] A cooling system was equipped above the command module behind the entry hatch.[4]

Armament, power and defense[]

AT-STs were equipped with two chin-mounted MS-4 twin blaster cannons[4] with a range of two kilometers.[1] They also featured one cheek-mounted 88i twin light blaster cannon and one cheek-mounted DW-3 concussion grenade launcher capable of doing massive damage to enemy vehicles and ground troops at close range[6] and used at dealing with large amounts of infantry as well as mounted turrets that were too risky to be taken out with rocket launchers.[8] AT-STs were also equipped with retractable footpad blades[4] which could slash apart wires and fences at ground level.[6] The modular design of the All Terrain Scout Transport allowed for ease in customizing the walker with armaments and tools for specific mission parameters, including mortar launchers that could be attached to the command pod of the AT-ST.[15]

AT-ST Mortar Launcher SWL

A mortar launcher attached to the command pod of an AT-ST

Several areas of the walker's hull were reinforced with armored plates, including the rear of the command cabin which featured the weapon power converters, the front (or "face"), the joints and the gyro-stabilizing system.[4] In addition, reinforced armor plates enveloped the control cabin, protecting the two-person crew[5] from small-arms fire, but not laser cannons, missiles, or other heavy ordnance.[5]

Due to its small size, the AT-ST could not be equipped with an onboard full power generator, and as such relied on eight disposable high-intensity power cells mounted directly at its drive engine. Two more cells powered the cabin gyro for redundancy. Despite covering the walker's high energy needs, these power cells greatly limited its range.[4]

Locomotion and navigation systems[]

The walker's deceptively rickety gait belied a potent patrol vehicle. Gyros and flexible joints formed a complex system that controlled balance and stabilized the walker across a variety of terrains.[6] Sophisticated shock-absorbers built inside the lower legs of the walker kept it stable at all times, while a variety of sensors built within its footpads offered detailed feedback on the terrain the AT-ST was moving through, reading intensity and contour for precise foot placement. The locomotion computer mounted in the command cabin could take control of the walker and use the information relayed from the sensors to drive it autonomously over even ground, although an experienced pilot was still needed over complex terrain.[4]


ATST cockpit view

The AT-ST command module

Despite its speed and agility, an AT-ST walker's offensive and defensive power were significantly compromised. Offensively, its weapons systems were only good against lightly armored targets at close range. Defensively, its lighter armor could repel attacks from small-arms fire, but not laser cannons, missiles, or other heavy ordnance.[5] Its armor did not cover its entire frame, lest the walker lose its agility. Striking the walker's unprotected gyros underneath the command module could destabilize the walker and cause it to fall. Additionally, deep trenches or cable lines leveled at the height of the AT-ST's ankles and knees could cause it to trip and topple the vehicle.[6] AT-STs are also known to require constant maintenance, having perhaps the highest maintenance-per-hour record in the entire Imperial Army.[3]

The Ewoks of Endor discovered that the AT-STs were vulnerable to anti-Gorax traps. Ramming logs could smash through the walker's head, destroying the cockpit. One of its other weaknesses was its susceptibility to hijacking, despite the height of the vehicle seemingly making hijacking an impossibility. A sufficiently strong force could rip the entrance hatch off the top of the walker. If commandeered, the walker's cannons could easily penetrate other AT-STs' armor.[1][9]

Variant models[]

All Terrain Construction Transport[]

The All Terrain Construction Transport saw use for construction proposes.[16]

All Terrain Exploration Transport[]

Also known as the "Strider," the All Terrain Exploration Transport was itself a smaller version of the AT-EST Exploration and Survey Walker.[17]


The AT-KT was nicknamed the "Hunter" and saw use on the planet Kashyyyk.[16]

All Terrain Scout Transport/Assault[]

The All Terrain Scout Transport/Assault was a direct assault variant of the AT-ST.[16]

AT-ST Mark III[]

Various Imperial walkers

An AT-ST Mark III marches into battle

The AT-ST Mark IIIs were equipped with experimental armor that provided more speed and durability than that of the standard AT-ST. Mounted with twin heavy laser cannons and piloted by veteran crews, they excelled against most targets.[10]

AT-ST Raider[]

A variant used by a Klatooinian tribe.[18]

Enhanced AT-ST Walker[]

The enhanced AT-ST Walkers boasted enhanced power couplings and sub-systems, allowing their weapons to fire high-powered blasts at a faster rate than average. They also had dark armor plates.[10]

First Order AT-ST[]


The AT-ST variant fielded by the First Order.

The First Order utilized an updated version of the AT-ST that featured upgraded armor and gyroscopic systems.[19] Several of them were stored aboard the Supremacy.

All Terrain Heavy Scout[]

The All Terrain Heavy Scout was a highly evolved variant of the First Order AT-ST, which saw service in the First Order Army during the intergalactic First Order-Resistance War.[20]


"The big AT-ATs mostly advanced up the middle, so out on the edge of the battlefield we'd been pinned down by a little scout walker. I guess it wanted to keep us from flanking its big cousins."
―Chanda Bethari's account of fighting an AT-ST on Hoth[13]

Part of the All-Terrain walker family, the AT-ST's role in supporting Imperial ground operations earned it the moniker "scout walker"[1] owing to its ability in ferreting out enemy positions and inspecting locations in advance of larger walkers. It was better equipped than the Republic AT-RT[6] and was in service by the Invasion of Mon Cala in 18 BBY.[21]


Like the rest of the Imperial Army, AT-STs fought rebellious forces, including the Rebel Alliance during the Galactic Civil War.

In 14 BBY,[22] an AT-ST attacked the Stinger Mantis ship on Zeffo, but was destroyed by the Jedi Padawan Cal Kestis. The Empire used AT-STs against the Partisans led by Saw Gerrera on Kashyyyk and Kestis, who helped the rebel group during the battle to take over an imperial refinery. The AT-STs were on Ilum when the Empire started mining the world to acquire Kyber crystals. When Kestis went to the planet to find a crystal to build a new lightsaber, two AT-STs were destroyed by the Padawan during his escape from the world.[23]

The Imperial Military commonly used the AT-ST in a variety of environments.[24] After rebel leader Saw Gerrera and his Partisans took to defending the world of Jedha, AT-STs were among the reinforcements deployed to aid the planet's occupying garrison; with the ancient Holy City consumed by surface warfare, the AT-STs were fielded for urban pacification[25] against the Partisans[24] whenever they could fit into the city's winding and narrow streets. While accordingly impractical during the Jedha insurgency, the walkers were also fielded to try to send a message beyond their blaster fire, but the Partisans instead chose to intensify their efforts against the garrison. With the Empire retaliating in equal force, battle continued in the streets, with AT-STs devastating the city and civilians. Even so, both sides continued to fight,[25] with one AT-ST being deployed in Tythoni Square as part of the battle on Jedha[24] in 0 BBY.[26] The insurgency ended when all but at least three percent of the Imperial garrison retreated under Protocol 13. Afterward, the DS-1 Death Star Mobile Battle Station destroyed the Holy City.[27]


An AT-ST succumbs to Ewok traps during the Battle of Endor

The walkers were also used in the Galactic Civil War. At least one fought in the Battle of Allst Prime.[28] General Weiss commanded a customized AT-ST.[29] Between the Battle of Yavin and Battle of Hoth, the Alliance to Restore the Republic operated stolen AT-STs, and provided them to Saponza's Gang, who often fought against the walkers.[10] Three AT-STs were deployed as part of Lieutenant-Inspector Magna Tolvan's attack on the Son-tuul Pride crime syndicate.[30] Several fought alongside All Terrain Armored Transports (AT-ATs) at the Battle of Hoth.[31] They also notably participated in the Battle of Endor, where they were defeated by the Ewoks and their[9] anti-Gorax[32] traps. One walker,[9] Tempest Scout 2,[33] was captured by the rebel Wookiee Chewbacca and two Ewoks, Widdle Warrick and Wunka.[34]

The walkers were also used by the Empire in the final battle of the Galactic Civil War, the Battle of Jakku, which ended up being an overwhelming victory for the New Republic.[35] In 9 ABY,[36] an AT-ST was used by looters to attack a village on the planet Sorgan. The AT-ST became embroiled in the battle between the looters and the village people, who were suddenly led by Mandalorian bounty hunter Din Djarin and former rebel shock trooper Cara Dune. In the end, Djarin destroyed the walker with a grav charge.[18]

Thirty years after the close of the Galactic Civil War, a splinter military group of the New Republic called the Resistance utilized old Imperial AT-STs in combat against the reorganized remnants of the Galactic Empire, the First Order. They possessed an orange repaint and were crested with the Resistance starbird.[12]

Behind the scenes[]


An AT-ST during the Battle of Endor

All Terrain Scout Transports first appeared in the 1980 motion picture Star Wars: Episode V The Empire Strikes Back.[31] The AT-ST model received some cosmetic changes for its extensive appearance in the 1983 film Star Wars: Episode VI Return of the Jedi, thus explaining the minor differences in the models used for the two films.[37]


AT-ST Stop Motion Model Endor

ILM model makers Paul Huston and Larry Tan painstakingly move a chicken walker for Star Wars: Episode VI Return of the Jedi.

Non-canon appearances[]


Non-canon sources[]

Notes and references[]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Ultimate Star Wars
  2. 2.0 2.1 2.2 2.3 2.4 StarWars-DatabankII AT-ST Walker in the Databank (backup link)
  3. 3.0 3.1 Starships and Speeders
  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 Star Wars Complete Vehicles, New Edition
  5. 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 Star Wars: Rogue One: The Ultimate Visual Guide
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 Star Wars: Rogue One: Death Star Deluxe Book and 3D Wood Model
  7. ToppsDigitalLogo Star Wars: Card Trader (Card: AT-ST - Blueprints)
  8. 8.0 8.1 8.2 8.3 Star Wars Battlefront
  9. 9.0 9.1 9.2 9.3 Star Wars: Episode VI Return of the Jedi
  10. 10.0 10.1 10.2 10.3 10.4 Star Wars: Commander
  11. Aftermath: Life Debt
  12. 12.0 12.1 12.2 12.3 12.4 Star Wars Battlefront II
  13. 13.0 13.1 Star Wars: On the Front Lines
  14. Star Wars Character Encyclopedia: Updated and Expanded
  15. SW Legion template Star Wars: LegionAT-ST Unit Expansion (Card: AT-ST Mortar Launcher)
  16. 16.0 16.1 16.2 AltayaCite "Walkers and Ground Vehicles of the Empire and First Order" — Star Wars Encyclopedia
  17. Savage Spirits
  18. 18.0 18.1 The-Mandalorian-logo The Mandalorian — "Chapter 4: Sanctuary"
  19. Star Wars: Episode VIII The Last Jedi
  20. Star Wars: The Last Jedi: The Visual Dictionary
  21. Darth Vader (2017) 14
  22. Star Wars: Timelines dates the events of Star Wars Jedi: Fallen Order to 14 BBY.
  23. Star Wars Jedi: Fallen Order
  24. 24.0 24.1 24.2 Rogue One: A Star Wars Story
  25. 25.0 25.1 AltayaCite "Walkers and Ground Vehicles of the Empire and First Order" — Star Wars Encyclopedia
  26. The battle on Jedha took place during Rogue One: A Star Wars Story, which Star Wars: Galactic Atlas dates to 0 BBY.
  27. Rogue One: A Star Wars Story novelization
  28. SWInsider "Inbrief" — Star Wars Insider 161
  29. SW Legion template Star Wars: LegionAT-ST Unit Expansion (Card: General Weiss)
  30. Doctor Aphra (2016) 19
  31. 31.0 31.1 Star Wars: Episode V The Empire Strikes Back
  32. Star Wars: Absolutely Everything You Need to Know
  33. AtomicMassGames-Favicon Tempest Force Battle Force Preview on Atomic Mass Games' official website (backup link)
  34. Return of the Jedi: Beware the Power of the Dark Side!
  35. Aftermath: Empire's End
  36. Star Wars: Timelines dates the events of "Chapter 1: The Mandalorian" and "Chapter 16: The Rescue" to 9 ABY. The events of Chapters 1–16 must therefore also take place in 9 ABY, and the events of Chapters 17–24 must take place around that year as well.
  37. Databank title All Terrain Scout Transport (AT-ST walker) in the Databank (content now obsolete; backup link)

External links[]