Yesterday I was finishing my assignment on grid am19, (no torpedoes left after a convoy attack
; 45k tons down
), when I recieved a bdu
message "inviting" all submarines in the vicinity of norway to join operation Sportpalast with battleship tirpitz, I couldn´t refuel and rearm and reach the rendevouz point in time so I let it pass,
later checking the web I found it was a real operation to intercept a couple of allied convoys, do these mission appear normally in the campaign?.