Really? Was that in the Pacific, and the Mediterranean?
I thought the 20th and 55th started with the H model in October of 1943.
The H's were the first in the ETO, but were quickly replaced by the Js.
In the MTO they got the ETO hand me down Hs. They were still flying G models well into 44 in the MTO. The 82nd FG had a 38F named "Sad Sack" that was in combat for 17 months, flew 184 missions and had 16 planes to it's credit, finally being retired at the end of May 44 after taking a flak hit to the nose. About 1100 G models built with about 600 Hs, 600 Fs. In terms of air combat in the Pacific, it really was prime time in 43. They certainly were still shooting stuff in 44 but not at the rate they were claiming in 43. This is the same in the MTO.
I suppose in were talking about ground attack too, it might be closer, but the air to air stuff was the early birds and the G had the largest production run