Battlefield Methane Tanks
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File:MethaneTank.jpg
A Batttlefield tank
Battlefield Methane Tanks are equipment used primarily by Covenant Grunts.
The Grunt's homeworld is a methane planet and as such they breathe a methane atmosphere. Thus when they are on an oxygen atmosphere like the Halos or Earth they need to wear a methane gas mixture. When Grunts are in battle, they will run low on their supply of methane, so they must have a ready supply nearby.
They are short and round in shape, purple in color and have a large blue valve on the top. They are seen generally where Grunts are operating. They only appear in Halo 2[1] and Halo 3 [2]
The tanks are also highly explosive due to their methane content.
