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"You must not allow the clones to reach the surface."
"Our new proton cannon are in the optimum position to prevent that, sir."
Emir Wat Tambor and TX-20[src]

J-1 proton cannons[2] were a form of droid artillery that fired proton bombs. They were used by the Confederacy of Independent Systems during the Clone Wars against the Galactic Republic. They were deployed by the Separatists on the planets Ryloth,[1] Geonosis,[3] and Anaxes.[4]

History[edit | edit source]

During the Confederacy of Independent Systems's occupation of Ryloth, the tactical droid, TX-20 and his battle droids set up a battery of five of these proton cannons in the city Nabat. When the Grand Army of the Republic attempted to land, the cannons were able to destroy one of the three assault ships. The cannons were then destroyed when Jedi General Obi-Wan Kenobi hijacked one, and proceed to fire on the others.[1] During the Second Battle of Geonosis, they were used to stop Republic forces from reaching the primary droid foundry. A proton cannon used against the Republic ships during their landing phase was taken out by BTL-B Y-wing fighter-bombers. After their ground forces reached Point Rain, Jedi General Anakin Skywalker led his PadawanJedi Commander Ahsoka Tano—and clone troopers into the enemy lines, where they used Electro Magnetic Pulse grenades to take out the scanners on proton cannons. This allowed All Terrain Tactical Enforcers to enter without incident and take out the Geonosian defenses, including the proton cannons and shield generator.[3] During Anaxes, they were used by the Separatists to stop the Republic during the Outer Rim Sieges, but failed.[4]

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Behind the scenes[edit | edit source]

Proton cannons in the unfinished edition of "Unfinished Business"

The J-1 proton cannon first appeared in the opening newsreel of The Clone Wars: Season One episode "Innocents of Ryloth."[1] They later appeared in the unfinished storyreel of the episode "Unfinished Business,"[5] as well as its completed Disney+ adaptation.[4]

Appearances[edit | edit source]

Sources[edit | edit source]

Notes and references[edit | edit source]

Separatist battle droid models
Infantry
Aqua droid · B1-series battle droid (631 · B1 grapple droid · B1 recon droid · B1 repeater blaster droid · B1 rocket launcher droid · B1-series rocket battle droid · B1 supervisor droid · Firefighter battle droid · Heavy Battle Droid · Jungle battle droid · OOM-series battle droid (OOM command battle droid · OOM pilot battle droid · OOM-series security droid)) · B2-series super battle droid (B2-ACM Trooper · B2-HA super battle droid · B2-RP battle droid · B2 grapple droid · Super battle droid rocket trooper) · B3 battle droid · BX-series droid commando (BX-series droid commando captain) · C-8 saboteur droid · D-wing air support droid · Infiltrator demolition droid · Droideka (Sharpshooter droideka) · DSD1 dwarf spider droid · IG lancer droid · IG-100 MagnaGuard · LR-57 combat/retail droid · Millicreep droid · Pistoeka sabotage droid · Probe killer · SD-K4 assassin droid · Separatist probe droid · Unidentified battle droid model · Viper recon droid
Droid tanks
IG-227 Hailfire-class · LM-432 crab droid · NR-N99 Persuader-class
Droid walkers
Harvester · Octuptarra tri-droid · OG-9 homing spider droid
Droid starfighters
Droid tri-fighter · Hyena-class bomber · Vulture droid starfighter (Unidentified vulture droid variant)
Other
Decimator · Droideka Oppressor · HMP droid gunship · J-1 proton cannon · S-43 enforcer droid · ST-series super tactical droid · T-series military strategic analysis and tactics droid
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