Some OSs allow some choice in what you learn. When you have a choice in training, choose from the following list. Each one may only be chosen once.
Weapon Trainings: Energy, Primitive, Projectile
Survival Trainings: Arctic, Exo, Desert, Hostile, Jungle
Heavy Weapon Trainings #: Energy, Nuclear, Primitive, Projectile
#: Heavy weapon training cannot be cross trained and therefore is only available if your primary OS is Security or Pilot. Nuclear is only available if your primary OS is Security.
You must have 12 Intelligence to take a Field Scientist Occupational Specialty.
Life Sciences Specialist
Skill List: Aquatics, Botany, Chemistry, Ecology, Surveillance, Zoology
Planetary Science Specialist
Skill List: Cartography, Chemistry, Demolitions, Geology, Geomorphology, Meteorology
Social Science Specialist
Skill List: Anthropology, Archeology, Cryptography, Linguistics, Psychology, Sociology
You must have 12 Intelligence and 10 Dexterity to take a Field Engineer Occupational Specialty.
Electrical Engineering Specialist
Skill List: Electronics, Fusion, Optics, Programming, Robotics, Transmatt
Mechanical Engineering Specialist
Skill List: Demolitions, Fabrication, Mechanical Engineering, Metallurgy, Robotics, Structural Engineering
You must have 12 Dexterity and 10 Wisdom to take the Scout Occupational Specialty.
Skill List: Cartography, Hand-to-Hand, Surveillance. Choose two Survival Trainings and one Weapon Training.
You must have 12 Strength to take the Security Occupational Specialty.
Skill List:Cryptography, Hand-to-Hand, Interrogation. Choose two Weapon Trainings and one Heavy Weapon Trainings.
You must have 10 Dexterity to take the Pilot Occupational Specialty.
Skill List: Navigation, Vehicle/Air, Vehicle/Land, Vehilce/Space, Vehicle/Water, Zero-G-Training
You must have 14 Intelligence and 12 Wisdom to take the Field Doctor Occupational Specialty.
Skill List: Cybernetics, Field Medicine, Pathology, Pharmacology, Psychology, Surgery