This is Hell Let Loose. Coming to PC Early Access in 2019.
Hell Let Loose brings World War II on an epic scale:
Huge battles - 100 players per game, 50 vs 50.
A new metagame - Capture sectors and resources to secure the win for your team!
Combined arms - Over 20 different player-controlled vehicles and deployed weapons.
Epic maps - Battle over huge, 1:1 scale maps.
More than shooting - Supply, capture and building mechanics all play their part in a team's victory.
Experience history - Historically accurate arsenal with realistic weapon behavior.
A modern engine - Powered by Unreal Engine 4.