Base camping examples: taking place within an uncapturable base.

• Bringing a tank to the enemy's uncapturable flag. There's no reason to do this. Never bring a tank into an enemy base. Go defend your flag.
• Stealing a tank from the enemy base, but not leaving with it immediately. If you clear a path on your way out that's ok. But keep moving or risk being kicked.
• Ex-packing spawn points within the base. (Think Kursk)
• Dropping mines in paths/roads within a base or booby trapping vehicles within a base
• Nading spawn points in a base.
• Laying in wait. For example: Hiding behind a tank spawn with your bazooka just waiting for someone to hop in the tank so you can blast it.
• Taking up a position in the AA in the enemy base.
• Simply going into the base with your assault weapon and fragging away
• A plane strafing down your plane on the runway is considered base camping. If an enemy pilot REPEATEDLY does this and lets no one get airborne. He will be kicked at admins discretion.

Exceptions to the rule:

• Arty firing from an uncapturable base: An engy or AT going into the base to blow up the arty that is firing away on your position is allowable. Or even a tank firing into the base to hit the arty is allowable. Think of either team on Battleaxe, and Axis on Battle of the Bulge. The arty cannot use the refuge of the base rule to create a safe zone for itself. However, on Battleaxe, if all flags are held by your teams, do not use the excuse of this exception to go into the enemy base. It will have the appearance of base camping.
• Ships are uncapturable spawn points as well. They can't be stolen or captured and they are spawn points. Killing the enemy as they spawn on a ship IS definitely spawn camping, and should be dealt with in the same manner as base camping.
• Market Garden: An unbalanced map in favor of the Allies: The uncapturable point is the Allied airfield. If an Axis player manages to steal a plane and then uses that plane to keep the rest of the Allied planes grounded, that is a reasonable tactic, given the Axis disadvantage on this map. TANKS ON THE RUNWAY ARE NOT ALLOWED. Same as Allied tanks are not allowed into the Axis uncapturable. Allied planes can and do make repeated passes over the Axis uncapturable base.
• AA shooting aircraft from an uncappable base. Infantry or planes can take out AA guns or gunners only if they are occupied. They must leave the base immediately after the skirmish.
• Battle of Britain: This is an objective based map: Because the objective is within an uncapturable point the base camping rule is null and void. Allied planes trying to stop the Axis from getting to their objective are just playing smart. The axis has plenty of AA in their base to address enemy planes. In public play, Axis has the advantage on this map.
• Beach flags on Iwo Jima and Omaha Beach: Neither of these are capturable flags for the Axis teams. But they are capturable for the Allies: Trying to keep them from being taken is legit. Though, on Omaha it is sporting to let the Allies take the beach flag. It is also sporting to keep the tanks off the beach or hills until the beach flag is taken.

THIS IS NOT CONSIDERED BASECAMPING

• A jeep driving through a base looking for something to steal. If the jeep runs you over as it drive through, that is not base camping.
• Stealing vehicles from a base is not camping.
• Battleship guns or artillery firing into the base from outside the base.
• Snipers shooting into the base from a distance.
• A stolen tank looking back and firing at you while it leaves the base is not base camping. It is leaving.
• An enemy infantry shooting/nading you as he is attempting to steal a tank or plane from your base. If he kills you, takes the tank, and then leaves; that is being pwned, not camping. If he was heading for a tank and you beat him to it by a half second and then he drops a mine under you, also not basecamping. That is a skirmish.

Overall it is about sportsmanship, and keeping it fun to play.

There is a legitimate reason to be in the enemy base, and that is to steal something from the opposition, and then get out quickly. Otherwise there is rarely a reason to be in the enemy base. You can go in by jeep or on foot, but NO TANKS should ever go to an enemy base. If you get into a skirmish while on your way to to steal something, that is legit. Just get what you came for and get out as fast as possible.
As a general rule: If your team holds all the flags or is generally dominating the match, be sporting and stay out of the enemy base altogether. Stealing stuff is a tactic best reserved for the team getting stomped on. Not the stompers. Besides, going into the enemy base when your team is dominating makes you look exactly like a base camper, and you just might get kicked from the game.