1st Brigade, 2nd Infantry Division to Deactivate

Having spent a few years in 1st Brigade it is a bit sad to see it go:

SEOUL, South Korea — A decades-old 2nd Infantry Division unit stationed near the tense South-North Korea border will deactivate and be replaced by a U.S.-based rotational brigade combat team, according to the Pentagon.

The 1st Armored Brigade Combat Team will be deactivated in June 2015 and will be immediately replaced by approximately 4,600 soldiers from the 2nd Brigade Combat Team, 1st Cavalry Division stationed at Fort Hood, Texas, the Defense Department announced Thursday.

Troops are typically stationed in South Korea on one- or two-year tours, leading to frequent turnover within units. The deactivation and switch to nine-month rotational deployments is part of a U.S. Army rotational plan that calls for similarly sized and capable units from the United States to train and deploy together.

“There’s no loss in capability. Some would argue that the capability might even be slightly higher because it’s a trained unit that arrives there in Korea prepared to act,” Pentagon spokesman Col. Steve Warren told reporters. “We believe that any loss to continuity with familiarity to the terrain will be made up by a single cohesive unit that is familiar with working with each other.”
(Stars and Stripes)

You can read more at the link, but the problem you have with rotational units is that everyone is the new person all at the same time.