 After the seizure of both Aitsu and Rujioru, artillery emplaced on the two islands and were used in fire support for the occupation landing forces on Engebi, or FRAGILE.General Watson attached the 2nd Separate Tank Company from 22nd Marines and Captains Jones's and Katzenbach's recon and scout companies to the Army 106th Infantry Regiment (less 2nd Battalion) and designated the reinforced unit as 3rd Battalion, 106th Infantry (3/106) as reserve.At 0908, the Marines hit the beach for the main assault of 1st and 2nd Battalions of 22nd Marine Regiment.