There are only two kinds of crates in Tiberian Twilight, Green Tiberium Cores and Blue Tiberium Cores, both are produced by Refueling Stations or by destroying enemy units.

Pick up a Green Tiberium will instantly promote the unit's Veterancy, and restore some health. Pick up a Blue Tiberium Core will install additional armaments to the unit and/or upgrade its weapons' performances, but only affects Offense Class units. Non-Offense Class units will only gain Veterancy and health when picking up a Blue Core.

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