Blues travel to Posh in first week of December
Town have been drawn away to Peterborough United in the round of 32 stage for the Leasing.com Trophy.
Paul Lambert's side finished second in their group and were therefore guaranteed an away tie for the first knockout stage of the competition, with the draw regionalised to Southern and Northern sections.
Should Town progress from the clash at Weston Homes Stadium, the round of 16 stage of the tournament will also remain regionalised, with the quarter-finals then being drawn without any geographical restrictions.