Advanced Tactical Training
Advanced Tactical Training was a special course for Starfleet officers focused on tactical training. Officers must be recommended for this training. It was so difficult and challenging, in fact, that half of the class washed out each year.

Between 2369 and 2370, Ro Laren attended Advanced Tactical Training per the recommendation of Captain Jean-Luc Picard. After her training, Admiral Alynna Nechayev felt that Ro's training qualified her for an infiltration mission of the Maquis. Ro was hesitant and even mentioned that one of her instructors in Tactical Training (a lieutenant commander) was sympathetic to the Maquis. He resigned from Starfleet and joined the Maquis.

Ro was later able to use the training to trick the  and "steal" supplies from it while working undercover with the Maquis before actually defecting. ()

See also 
 Advanced Tactical

External link
 

Starfleet Academy courses