Thank you for the suggestion I’ll give checking BF1 a try.
It appears you are referring to the Xbox One X Gold Rush Battlefield V console bundle. I see no indication of the Enlister Offer being mentioned in any of the marketing material for that bundle on any of the retailers I looked at that are offering that bundle. It may just not be included but it's possible that the store could print you out a code if you showed your receipt and asked for one in person or via phone/email. I only see the Enlister offer being mentioned for the stand alone versions of the game.
The easiest solution would be to simply preorder the standard version of the game from an online retailer and cancel the pre-order as soon as they email the code for the Enlister Offer and before the order ships. I wouldn't pre-order the Deluxe Edition as that is releasing on the 15th. These retailers are not going to care that you cancelled a pre-order before the order ships.
If you do a search for the enlister offer in the Xbox Store you see the following items are included in that bundle: Battlefield 1 Weapons, Paratrooper Outfit & Special Assignments. The weapon pack would be found in the manage game section of B1 and the outfit/assignments would be in manage game for BV. That outfit and those assignments are not available in the EA Access trial and won't be available until the Deluxe Edition releases on the 15th.
