There are new Battlefield 1 Summer Missions coming. They are a part of the chained series of challenges where you need to be a team player.
Each mission will come with its very own Dog Tag reward and a Squad XP Boost for the ones who complete it. If you succeed in all three, there is an exclusive melee weapon waiting for you, the LVC Arditi Knife. There is also another award that is secretive right now.
The first Summer Mission is called the Call to Action Mission. Here, you need to play, complete and win the three matches of Operations. The mission will be active between July 15th and July 23rd.
If you succeed to complete the mission just in time, you will get the Call to Action Dog Tag and a Squad XP Boost.