List of UNSC crates

Scattered throughout multiplayer and campaign levels on Halo 2 and Halo 3 are UNSC crates, or large boxes, that contain supplies for ground based Marine forces. The contents of crates can be identified by their labels, and range from portable generators to armored boots. Although their only actual use in the game is cover from enemy fire, they do reveal a bit about the UNSC military, and play a key role in the environment of maps and campaign levels. They can also serve as cover or platform.

Crates
There is a range of different types of crates. This section contains information on all of them, ranging from smallest to largest. Kits are small crates that appear to be carried by Marine ground forces. Barrels contain liquid supplies. Small crates carry equipment used by ground troops, and large crates contain large pieces of equipment for use at fixed positions.

Rescue
The first crate can be found only once or twice in the game; it appears to be a small medical kit Marine medics would use to treat the wounded. It has the word "Rescue" along with the international medical symbol. It is likely able to be found in various campaign levels at Marine positions, but it can only be found once in multiplayer on the map Foundation.

Nerve Gas
This container can be found in a Brute encampment inside the armory. It is placed under another crate so it is pretty difficult to find. There's another one on Metropolis on top of the building where Sergeant Banks and a turret are next to a medical crate. The crate has been spotted on the multiplayer map Foundation as well. Perhaps it is with a bit of dry humour that Bungie placed this small crate right next to a medical kit within the same room. It might be inspired by the infamous VX nerve agent that is in use today.

Type: VX 7, possibly one of Bungie's 7 references.

Blitz Can
This crate or barrel is for emergencies. You can also find blitz cans with Hydrogen fuel.

Item: Water - Pure

Water
This crate (or barrel) can be found all over on multiplayer maps and Marine encampments in campaign. It appears to be a barrel of water for hygiene, cleansing, drinking, etc.

Type: Pure

Hydrogen
It's likely this is used by Marine ground forces to fuel various equipment, including generators and Warthogs.

Type: Fuel

Gas Mask
Gas masks are used by ground forces for protection against chemical or biological weapons.

Serial Number: 7880-53-413-1990

Type: S90

Item: Gas Mask/KR3/INF/BLK

Quantity: 64

Weight: 112 LBS

Lot: LYSE7Q409-53

Helmet
You'll find this on almost every Marine you encounter in Halo.

Serial Number: 9325-80-548-4127

Type: CH252

Item: Helmet/C-M/INF/W-OD

Quantity: 26

Weight: 82.6 LBS

Lot: TASA2G708-80

Body Armor
This for use by Marine ground forces for protection from energy and ballistic projectiles.

Serial Number: 2580-55-270-4193

Type: M52B

Item: Body Armor/C-M/INF/W-OD

Quantity: 12

Weight: 173 LBS

Lot: PILT4G312-55

Armored Boot
For use by ground pounders.

Serial Number: 5893-22-418-2524

Type: VZ67

Item: Armored Boot/INF/V-OD

Quantity: 10 Pairs

Weight: 81 LBS

Lot: ROSW4C219-22

M6D Pistol
Perhaps the strangest box on Halo 2, it contains the Halo: Combat Evolved'' pistol.

REQ: Unknown

Type: M6D

Item: Pistol/M6D 12.7MM Rec. Op.

Quantity: 50

Weight: 204.5

Lot: PLTDN45145-81

Machine Gun
Used for base defence, this machine gun turret crate is found only on Headlong, Many Halo 3 maps (Forging), and various Campaign levels.

REQ: Unknown

Type/Item: M247 7.62 Gas Op. Auto Linkless

Quantity: 1

Weight: 893 LBS

Lot: VOYN3PV25-71

Emergency Food Prep Station
When a Marine is hungry, it's always an emergency.

REQ: Unknown

Type: MK71

Item: Emrgncy Food Prep. Station

Quantity: 2

Volts: 220

Weight: 716

Lot: ROSW4C240-92

Replacement Transfer Case
A transfer case is a part of the four wheel drive system found in the Warthog. The transfer case is connected to the transmission and also to the front and rear axles by means of driveshafts. The transfer case receives power from the transmission and sends it to both the front and rear axles.

REQ: Unknown

Type: D90Z

Item: Rplcmnt Transfer Case/M12LRV IDPG FT-DR

Quantity: 16

Weight: 203 LBS

Lot: LYSE7Q409-31

Security System
Security is a necessity for Marine encampments to protect against attacks.

REQ: Unknown

Type: SL23

Item: Auto/Sec/Mon/System

Quantity: 32

Optical: 8

Digital: 4

Weight: 305 LBS

Lot: TASA26700-92

Portable Generator
This portable electric generator/hydrogen fuel cell is likely used at fixed positions for power.

REQ: Unknown

Type: PG000E

Item: Port EL Gen/HY F Cell 18 KV

Quantity: 16

Gallons: 9

Hours: 24

Weight: 273 LBS

Lot: PILT4G312-70

Supply Drop Pod
Drop Pods are dropped by Pelicans to quickly deliver ammunition and weapons to soldiers.

Type:C Capsule

Lot:0722657

Halo 3
Halo 3 features most of the same crates as seen in Halo 2. Interestingly, the crates in Halo 3 have the exact same labels as in Halo 2, even though the pieces of equipment they represent have been changed. Of course it's possible that the crates contain older equipment.