(Splendid Durian) Set question.

5v5 has 2 main options: 1.) Get both flags at the same time for a team win. 2.) Maximize you pvp points, take advantage of bonus points, be on a winning team (choose your team if you can). As far as tactics go, you can role-play any branch or service, any military combat unit. They all work. Martial arts tactics and sports plays are popular too. Strength attacks weakness; strength defends weakness. Teams beat individuals. Everyone can be had sometime. Everyone.

6v6 is a timed siege in a medieval setting. You win or you lose; again you get team points and individual points. Both sides can use artillery positions. Red can build equipment; Blue starts with some in place. The clock is Red's enemy and Blue's friend. The map is big enough that any position on the map can be overwhelmed by teams. Use speed, power, and timing.

Best learning is hand's on. Analysis a little in each match, and you'll teach yourself everything you need. If it doesn't work, do something else.

Hope this is useful.