Total Annihilation/Arm Tech Tree

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The bold item (Plant/Lab/Shipyard or Construction unit) in each column is required to build the units or structures beneath it.

Commander
Tier 1 Structures Solar CollectorEnergy StorageMetal ExtractorLight Laser Tower
Wind GeneratorMetal StorageMetal MakerRadar Tower
KBot LabVehicle PlantAirfieldShipyard
Tier 1 Units PeeWeeJeffyPeeperSkeeter
HammerFlashFreedom FighterCrusader
RockoSamsonThunderLurker
JethroStumpyAtlasHulk
Construction KBotConstruction VehicleConstruction AircraftConstruction Ship
Tier 2 Structures SentinelSentinelSentinelTidal Generator
DefenderDefenderDefenderSonar Station
GuardianGuardianGuardianTorpedo Launcher
Dragon's TeethDragon's TeethDragon's TeethLight Laser Tower
GeothermalGeothermalGeothermal
Advanced KBot LabAdvanced Vehicle PlantAdvanced Aircraft PlantAdvanced Shipyard
Tier 2 Units ZipperBulldogHawkPiranha
ZeusLugerPhoenixRanger
FidoTritonBrawlerConqueror
InvaderMerlLancetMillennium
EraserSeer Colossus
Jammer
Spider
Advanced Construction KBotAdvanced Construction VehicleAdvanced Construction AircraftAdvanced Construction Ship
Tier 3 Structures Big BerthaBig BerthaBig Bertha
RetaliatorRetaliatorRetaliator
AnnihilatorAnnihilatorAnnihilator
ProtectorProtectorProtector
Advanced Radar TowerAdvanced Radar TowerAdvanced Radar Tower
Aircraft Repair PlatformAircraft Repair PlatformAircraft Repair Platform
Fusion ReactorFusion ReactorFusion Reactor
Moho MineMoho MineMoho Mine