Wilhelm Tranow performed this task for B-Dienst. A group of female performers of this task were nicknamed "Dilly's girls," after the classics scholar and papyrologist Alfred Dillwyn Knox. Performers of this task bestowed the nickname "Tunny" upon the Lorenz SZ40. Marian Rejewski (mah-REE-ahn RAY- yev-ski), a Polish performer of this task, invented a device called the bomba. Several people were trained to perform this task on the (*) "Ultra" designation at Bletchley Park. The codename Magic was given to this task in the Pacific Theater, whereas in the European theater, performing this task often involved reverse-engineering Enigma machines. For 10 points, name this military intelligence task in which one accesses protected enemy communications.
Wilhelm Tranow performed this task for B-Dienst. A group of female performers of this task were nicknamed "Dilly's girls," after the classics scholar and papyrologist Alfred Dillwyn Knox. Performers of this task bestowed the nickname "Tunny" upon the Lorenz SZ40. Marian Rejewski (mah-REE-ahn RAY- yev-ski), a Polish performer of this task, invented a device called the bomba. Several people were trained to perform this task on the (*) "Ultra" designation at Bletchley Park. The codename Magic was given to this task in the Pacific Theater, whereas in the European theater, performing this task often involved reverse-engineering Enigma machines. For 10 points, name this military intelligence task in which one accesses protected enemy communications.