On 7 March , 1st Medium Tank Battalion was reactivated as part of 1st Armored Division at Fort Hood , Texas .
1st Armored Regiment was reconstituted , and redesignated as 100th Tank Battalion .
On 7 March , 1st Medium Tank Battalion was reactivated as part of 1st Armored Regiment     at Fort Hood , Texas .
1st Armored Regiment was reconstituted , and redesignated as 100th Tank Battalion .