Re: im not able to see the full six chapters in the campaign tab of battlefield 1

"Storm of Steel" is by default the first single player campaign if you are a new player. In addition, the Battlefield 1 Standard Edition also contains 5 single player campaigns: "Through Mud and Blood", "Friends in High Places", "Avanti Savoia", "The Runner", and "Nothing is Written". I think these five campaigns can be played in any order.