Orbital Ambush is a map set on the Level Avalanch. Along the border to the edge of the map there is a large Space Cruiser (the Cruiser does NOT in anyway pertain to the Halo game space vehicles, it is just what my mid has made it).
This Cruiser has 2 main levels, the bottom Hangar Bay, this holds two banshees and one Hornet (along with a few weapons). The middle level consists of three sections; The Cockpit/ Sniper Post, the central area, and the engine room. There is also an additonal section atop the ship for â€œPoint Defenseâ€.
The Cockpit is a small area with a sniper, there is a small sightline viewing the middle of the field that provides formiddable cover, and a great sniper post, the main area has weapons and objects scattered about, and the engine room has a few weapons and a large group of explosives. The top section has 2 turrets and a rocket spawn.
The next area is the land between the ship and the Attacker spawn are, I like to call this area â€œNo Mans Landâ€ for absolutely no reason at all except for the fact that its in the middle. So yeah. It has a tank with NO view into the hanger, but is meant for defense against either teams airborn units.
And lastly, there is the Attacker Spawn. This area is (you geussed it) the Attacker teamâ€™s spawn area! They respawn here as well. When they spawn they go through the man cannon to the weapons area, get their weapons and equipment, and then proceed to the vehicles (one Hornet, and two Banshees) to engage the enemy in combat.
This map is territory based, there are seven of them;
1. Ship Cockpit
2. Engine Room
3. Main Ship Area
4. Hangar
5. Top Section
6. Above the Engine Room
7. â€œNo Mans Landâ€

YOU NEED THE GAMETYPE
TO PLAY THIS MAP!!!!!
Sorry that I had to do that, but so many people just donwload the map and get pissed because nothing works.

http://www.bungie.net/stats/Halo3/FileShare.aspx?gamertag=Purpl3Kill http://www.bungie.net/Forums/posts.aspx?postID=19816726 http://www.bungie.net/Forums/posts.aspx?postID=19816644
-------------------Map---------Gametype
Attacker Spawn \/

Attacker Vehicles \/

No Mans Land \/

Defender Hangar Bay V

Ship Cockpit V

Ship Main Area V

Ship Engine Room V

Top Level/ Outside view of the Ship V

Secret Telle V

I know that there are maps similar to this but of better quality, this is my first time making a map like this. The map has not been tested so I dont know how things operate.
EDIT: Tested with 6 people (varied every couple of minutes) and it played ok, the attacking and defending teams were both pretty much balanced. I have yet to play it with a large party however.