As best deciphered, they are from right to left

(First Row) Phillips, Maj., S-3; Hoad, Lt. Col., S-2 & Beach Defense; Terry, Col., Ex.; Ruhlen, Col., CO HDM & SB; Michie Col., Surgeon; Heminway, Lt. Col., AG; Stewart, Maj., Arty Engr.; (2d Row) Pritz, Lt. Col., Provost Marshal; Smith, Capt., P+P; Crawford, Lt. Col., HD Inspector; Harlington, Maj., PX Off.; Laine, 1st Lt., Mil. Police Off.; Firestone, Maj. QM; Sirett, Maj., S-4; (3d Row) Fiultz, Maj., Asst. Adj.; Madbury, 1st Lt. Asst. Ord Off.; Campbell, Capt. F.O.; Conable, Maj., Recreation & Cine Off.; Cleary, Maj., Chaplain; Hubbell, Maj., Ord. Off.; Reynolds, Maj., Chaplain.