Speaking in basic terms, there are all the standard Call of Duty multiplayer modes found within the beta, like Team Deathmatch, Domination, and Hardpoint. Here is a guide to all of the 5 multiplayer modes that you can try out in the Call of Duty: WW2 beta.

Team Deathmatch - The standard mode in the vast majority of online games, you simply have to kill enemy players faster than they can kill your team, and you'll win. Strength in numbers is actually quite a decent tactic in this mode, so it's a good idea never to stray too far from the rest of your team.

Domination - There are three positions on the map, and your team has to hold as many as they can, in order to accumulate more points than the enemy team. The trick with this mode is to never rest for too long on one point, and if you manage to capture two of the three points, make sure you push ahead to the final one, instead of hanging back from it and waiting for the enemy team to come to you.

Hardpoint - There's a single point on the map that both teams fight over to control, and the team that has players occupying the area gains points towards victory. Pay attention to where the Hardpoint is on your mini-map, but also note the timer below the mini-map, this indicates when the zone is going to move. Although you can never predict where the zone is going to move to, it's a good idea to move out just before the zone timer expires, even if you're currently holding the point.

Mosh Pit - Mosh Pit is simply all of the aforementioned modes on a single playlist. Basically, if you want to play through all of the popular modes in the Call of Duty: WW2 beta one after another, play Mosh Pit.

War - In this multi-stage mode, attackers and defenders have to either assault or defend multiple stages on a single map. Going from the attacker’s point of view, you have to firstly capture a zone, then gradually build a bridge while getting shot at, then plant and defend a bomb until it detonates, and then escort a tank to the end of the map. Each section is timed, so the defending team only win if they can hold the attackers off at one point for long enough. It's a complicated mode, but it definitely mixes things up a bit.