Japanese air units at Tarawa and Wake?

[Laurent Rizzotti]

You can try the book "Bloody Tarawa: The 2d Marine Division, November 20-23, 1943" by Eric Hammel. Chapter 6 describes the American air attacks on Tarawa.

Quick summary:
26 January 1943: 3 B-24s
24 April 1943: 12 B-24s
18-19 September 1943: joint attacks by B-24s (total 38 sorties) and carrier aircraft (no number): after this attack, all Japanese aircraft left Tarawa airfield.
Pre-invasion bombardment started on 13 November 1943, and intensified when carrier aircraft started attacking on the 18th.