See http://www.bildungszentrum.bundeswehr.de/ (in German language)
Transport by train; from Mannheim main station:
You can buy a ticket at the "DB Reisezentrum" or at a vending machine at each stop (€ 2,50 per ticket, € 1,90 with a German BahnCard).
Validate your ticket in the ticket machine when entering the tram.
Take the no. 1 tram from Mannheim main station direction "Rheinau" until "Tattersall" or walk to the "Tattersall" stop (leaving the train station direction city, about 500 m straight ahead, on the right side).
At "Tattersall", take the no. 6 tram direction Neuostheim. Leave the tram at "Lucas-Cranach-Strasse".
Turn right and then left after about 20 m.
After about 50 m, cross the main street, the "Seckenheimer Landstraße".
On the opposite side, the car entrance of the Academy is situated between trees (confirmed by an indicating label).
By going straight ahead (~ 100 m), you will arrive at the main entrance of the Academy.
For your arrival on Sunday:
On the opposite side of the place, right to the main entrance, there is an open window behind which you will find a person in charge for providing participants with some information and with keys for accommodation.
Change from the A 6 to the A 656 at the Mannheim highway junction (Autobahnkreuz Mannheim), following the signs to "Mannheim Mitte".
Exit the highway at "Neckarau / Feudenheim / Neuostheim".
Proceed towards Neuostheim on the B 37 (Seckenheimer Landstrasse).
Follow the signs to the Academy (Bildungszentrum der Bundeswehr).
Federal Academy of Education and Training in the Bundeswehr
Bildungszentrum der Bundeswehr - Bundesakademie (BiZBw)