E2-BAG/1/7

E2-BAG/1/7 is a UNSC Marine Corps unit.

Background
This unit and its members were stationed on Earth in 2552. They probably fought in the Battle of Earth.

Speculation
It is possible the E stands for the company, Echo. The 2 may be second platoon of E Co, or second battalion, which the company is part of. BAG could stand for Brigade (or Battalion) Assault Group, which would be the infantry element of a reinforced Marine regiment or battalion, or Marine expeditionary unit. The 1/7 could either be 1st Battalion, 7th Marine Regiment, or 1st Regiment, 7th Division.

More reliable information comes from Halo: Evolutions. The unit is referred to as a battalion from Eridanus 2, which explains the E2 and B. The 1/7 is probably then a battalion/regiment designation. The unit was probably relocated after Reach fell (Cortana calls is a "ghost battalion") and fought at Earth.

Trivia

 * E2-BAG/1/7 was interviewed by Dr. Robert McLees on multiple UNSC and Covenant vehicles and firearms that appear in Halo 3. Some of these interviews were posted on Bungie.net's front page.

Internal Articles

 * UNSC Marine Corps
 * UNSC Military Units