CREATE TABLE table_21599 ("Release" FLOAT, "Title" TEXT, "Start" FLOAT, "Pieces" FLOAT, "Board  ( inches ) " TEXT, "Board  ( cm ) " TEXT, "Type" TEXT, "New units New units when compared to the original A&A: Classic version of the game." TEXT, "Playable Powers" TEXT)

What year(s) was axis & allies: d-day released?
SELECT "Release" FROM table_21599 WHERE "Title" = 'Axis & Allies: D-Day'
SELECT "Release" FROM "table_21599" WHERE "Title" = 'Axis & Allies: D-Day'