CREATE TABLE table_68496 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

Name the 2nd leg for defence force
SELECT "2nd leg" FROM table_68496 WHERE "Team 2" = 'defence force'
SELECT "2nd leg" FROM "table_68496" WHERE "Team 2" = 'defence force'