Marshal was adamantly opposed to using the US Marines in the ETO. With the dissolution of Amphibious Forces Atlantic Fleet in mid 1942 & the withseaw of the Marines from Iceland for service in the Pacific they were gone for good. Once Japan surrendered most would end up as occupation forces across the Pacific/Asian region. The Navy might use some of the Marine air squadrons on carriers in the ETO & Marine contingents with the Navy would be more robust. Marshal had little to say about what the Navy did internally.
Conversely any Navy Construction Battalions (SeeBees) would be most useful restoring European ports & other infrastructure. Similarly parts of the flat train of mobile base support fleet would have some value unsnarllng a few of the Allied logistics problems.
We'd see a few more surface ships, carriers, and amphibs supporting Op NEPTUNE & DRAGOON or the last act operations in Greece & elsewhere.
The B29 wings are able to be redeployed to the ETO for the final act. Contributing to burning down the already ruined German industrial plant.
Conversely any Navy Construction Battalions (SeeBees) would be most useful restoring European ports & other infrastructure. Similarly parts of the flat train of mobile base support fleet would have some value unsnarllng a few of the Allied logistics problems.
We'd see a few more surface ships, carriers, and amphibs supporting Op NEPTUNE & DRAGOON or the last act operations in Greece & elsewhere.
The B29 wings are able to be redeployed to the ETO for the final act. Contributing to burning down the already ruined German industrial plant.