Conquest

Conquest is the gamemode where it shows all what battlefield has to offer, revolving around large-scale territory battles over map control points and continual attration of the enemy team. To win the round, one of the teams must reduce the enemys's reinforcement tickets (number of respawns or 'reinforcements') to zero or have more tickets than the enemy by the end of the round. Either by holding capture control points or killing the enemy to force them to respawn.
How you do this is really up to you. Some examples are using the maps destruction to your advantage by using the many vechiles, close quaters combat with your squad, or supporting your team by sniping and revealing enemy positions.