There will be a number of trainings that are and are not required to become a full-fledged ARF (you can get these after passing tryout)
EOD (Required for ARF squads) - Speak to SOBDE
TECH (Required for ARF squads) - Speak to SOBDE
ENG (Recommended for ARF squads) - Speak to Support Officer+
bMED (Recommended) - Speak to Medical Officer+ or Naval Med+
BARC (Recommended) - Speak to 501st Officer
501st ARF Personal Trainings - Speak to ARF Officer+
Weapons Training - Allows the use of more than 1 gun pouch
Recon Training - Allows the use of the strap
Stealth Training - Allows the use of the face kilt
Survival Training - Allows you to remove the backpack during combat. Permits the trooper to wear the ARC backpack (see the body groupers page for more details).