More like Operation Thunder Child

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FootfallNovel
Larry Niven & Jerry Pournellestandalone novel1985
Alien invasion and first contact, about survival and war.
“When aliens travel to Earth from Alpha Centauri, differences between alien and human psychology result in an unprovoked invasion, and the resulting resistance results in the aliens' use of a devastating weapon.”
from the catalogue
Operation Thunder ChildSeries
series2 books1999
Science fiction, tense in tone, about aliens, set in contemporary and our world.
“Since Pope had worked for the British Ministry of Defence on the subject of unidentified flying objects, the book had to be cleared by the Ministry prior to publication.”
from the catalogue
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Sinister BarrierNovel
Eric Frank Russellstandalone novel1939
Mysterious in tone.
“Russell revised and expanded the book for its first US publication by Fantasy Press in 1948.”
from the catalogue
The WandererNovel
Fritz Leiberstandalone novel1964
About survival, set in space.
SphereNovel
Michael Crichtonstandalone novel1987
Thriller & suspense, mysterious in tone, set in underwater and spaceship.
“Keeping Top Secret, the US Navy is guarding a gigantic spaceship that has been lying on the Pacific ocean floor for centuries, overgrown with corals.”
from the catalogue
The Kraken WakesNovel
John Wyndhamstandalone novel1953
Alien invasion, about survival and war, set in mid 20th century.
“Earth's life is disrupted by the attacks of extraterrestrials whose war machines, emerging from the depths of the oceans, seem indestructible.”
from the catalogue