Under the Eagle has 256 pages.
The Eagle's Conquest has 256 pages.
The Eagle Has Flown has 352 pages.
The Eagle of the Ninth has 255 pages.
A Catskill Eagle has 311 pages.
The Eagle's Prey has 480 pages.
Once An Eagle has 1312 pages.
"The Eagle Has Landed" by Jack Higgins typically has around 400-500 pages, depending on the edition and formatting.
378
Under Compulsion has 220 pages.
Under Heaven has 567 pages.
Under the Net has 286 pages.
Under a Velvet Cloak has 228 pages.