Upon return from deployment to OIF 1, The 4th Infantry Division immediately began reorganization into the "modular brigade" structure of the new U.S. Army. 4th Infantry Division was again deployed to OIF in late 2005, replacing 3rd ID in Baghdad. The 3rd brigade was attached to the 101st and the 1–68 was sent to Baqubah, Iraq.
After being reorganized the 1st Battalion, 68th Armor Regiment became known as the 1st Combined Arms Battalion, 68th Armor Regiment. HHC, known as Havoc with scouts, snipers, mortars and medics and staff positions. Alpha, known as Attack, and Bravo, known as Blackhawk were designated as infantry companies with M2A3 Bradley fighting vehicles. Charlie company known as Steel, and Delta known as Destroyer were set up as tank companies [14 M1A2 Main Battle Tanks each]. Echo company, known as Exile company as an engineering company. Fox company known as Forerunner was attached from 64th Brigade Support Battalion to provide Dining Facility (DFAC), maintenance/recovery and a Supply Distribution platoon. The final company is Golf company, which is the rear-detachment company for the battalion when it is deployed.
The battalion is currently deployed to Basra, Iraq as a part of OIF 10–11. Wikipedia