I Like mixed objectives or 'Ground War' as my site calls it.
Both teams fight over objectives,hidden bomb,flag capture,point control and a unique one,ammo boxes.
Ammo boxes give your team refills,from a Marshal at your base. So you have to conserve ammunition. People who use their own heavier ammo can carry two 100 round speed loaders of ammo.Usually varies and is organized between the staff and player. Not a lot of people use own ammo.
Limits on magazines are that only 1 hicap is allowed.You can carry as much midcaps and low caps as you can
Added to the fact of ammo limits,kills only get you 1/2 a point to discourage it from becoming deathmatch(I hate DM! love this rule)
Regen rules are that one can either regen at their base or wait for a buddy to tag them back in,in which you must count from 10 very loudly,effectively ruining any stealth.
However,while you are waiting to be tagged back in,you can be taken prisoner or hostage and used as a human shield or join the team that captured you.
Rest is self explanatory standard stuff.
Lasts about 2.5 to 3 hours,out of a 6 hour day with a 45 minute break. Rest of the games are usually 30 to 45 minute skirmishes,when it is played.
This is rarely played,mainly in the summer when schools are out or during events.(This site is popular among new players due to a low age limit,older people usually move onto the over 15s site like I will after the holidays.)
Pretty fun,never had a bad time during a ground war.