In case you don't have it, I submit the following information related to operations in the Pacific, which your dad was party to:
20 November 1943.
During the night,Task Force 53, consisting of more than 100 warships, transports and landing craft of all kinds approached the atolls ofTarawa and Makin, in the Gilbert Islands, under Operation Galvanic.
The 2nd Marine Regiment went ashore at 5:07AM on Betio Island, south west part of Tarawa Atoll.
It met with devasting fire power, and experienced heavy casualties.
My rweference states that things went much better for the 165th Regiment, 27th ID, and their supporting tanks, on Makin, landing at 8:30AM, 20 Nov 43.
Within a few hours of their landing, the landing forces established sound beachheads onButaritari Island, the main island of the atoll, after occupyong Kotabu ilet without resistance.
21 Nov 43:
On Makin atoll, again with support from aircraft, artillery and naval guns, the 165th IR launched an attack on Butaitara Island, and seize several Japanese fortified positions.
Small units landed on the ilet of Kuma, performed reconnaissance, then withdrew.
22 Nov 43:
The American advance on Makin atoll continued, aided by impressive supporting fire.
The last centers of Japanese resistance had been overcome, and that evening it was announced that Butaitara Island was captured.
During the night,residual Japanese troops who had not been withdrawn from the eastern end of the island, launched a final counter-attack,and were virtully wiped out.
23 Nov 43:
Both atolls had fallen to the Americans, the Japanese having completely run out of ammunition, their forces almost exterminted.