 After a series of tests by the 101st Airborne Division, the Continental Army Command (CONARC) approved slightly modified tables of organization, and all three airborne divisions (the 11th, 82nd and 101st) were reorganized during 1957.Shortly after the 101st began testing ROTAD, the CONARC began developing ROCID, forwarding the initial ROCID tables of organization to the Army Staff on 15 October 1956.The core of this initial ROCID organization, similar to ROTAD, consisted of five battle groups, each with a headquarters and service company, a mortar battery and four infantry rifle companies.