Better to make "The Kappillan of Malta" by Nicolas Montserrat (of the Cruel Sea fame) as a TV series.
Very easy to make as 7 or 8 episodes each 90 minutes or more
It has a framing story set during the siege 1940-42 based on Dun Salv, (Don Salvatore).
He is a rather everyman Catholic Parish Priest, who encourages his flock in the bomb shelters
by explaining the native Maltese involvement in 6 key historical events on the island from 1500bc to 1918
There's lots of action on land and sea, lots of costumes, lots of blood and gore and folksy stuff in between.
Very anti Muslim (see Great Siege) so will fit right into the current US mindset,
pro Christian .. a Catholic pastor as protagonist, but is that still popular?
anti Fascist (though the Italians called out as first aggressor as well as Nazis later, so maybe a problem)
anti-colonial (though the British come out well on the whole, which may be a deal breaker)
pro-socialist (Dun Salv's family is rich and he has chosen to be only a Kappillan, a parish priest )
IMHO VERY likely to get at least some support in Holywood
but since no explicit Americans, a rewrite would need to play up USS Wasp's two stings to be sure.
BTW Final war scene is the arrival of the Santa Maria Convoy, aka Pedestal, which could easily be expanded.
Even has a lot of human interest with the priest's niece falling for an FAA Pilot,
- struggling Catholic Morals vs Teenage hormones.
Cleverly handled in the book .. but would probably be more explicit in a screenplay today.
Dun Salv's own crisis of faith in the face of the cruelties of war might play well in the Protestant parts of USA.