Warren was very likely to have been named after President Warren G. Harding, but I do not know whether he was given Pres. Harding’s uncommon and little-known middle name (Gamaliel), or whether he was just given the bare initial, or some other name that begins with G.

The database of WW II enlistments records that Warren G. Pettit enlisted in the U.S. Army at Fort Benjamin Harrison, Indiana, on 14 July 1942. Birth year 1924, residence Elkhart, Indiana, education grammar school, single, no dependents, height 66 inches, weight 147 lbs.