Doug,

Eagle could be silver not white. Don't forget, generals got changed to gold cap insignia during the war. Early General's stuff does have silver insignia.

Not all Generals wore bullion insignia, although they were entitled to (bullion eagles on field caps was limited to those of field rank - major and above).

I like the look of this cap, and although the extra ventilation would probably make very little actual difference, it does look to be added for that very reason.

David!