Midway 1976

 The action in this film consists almost entirely of stock footage, much of it actual gun camera footage. It also uses stock shots including miniature footage from existing films. The sepia tinted opening sequence is lifted from Thirty Seconds Over Tokyo (1944),  a few miniature shots are from Tora Tora Tora (1970) and many miniature shots from the Japanese film Storm Over the Pacific (1960).

It does however have an original miniature sequence of two shots, a view from the cockpit of an attacking plane through the targeting reticule of an aircraft carrier and the aircraft carrier after having received a hit. These shots were taken from a helicopter with the model floating in a lake.

Submarine Seahawk 1958

This film's miniature shots are predominantly stock footage taken from two previous Warner Brothers movies, Action in the North Atlantic and Destination Tokyo both from 1943. The only new visual effects shots, consisting of miniature sinking ships falling onto the submerged submarine of the title, are poorly executed and don't match the pre-existing material in quality of execution.

The publicity photos for the film also contain images taken from those previous productions.

I have included images below from the shots made expressly for the film but note that the copy I have is a very poor digitization of a VHS source. For the rest of the material click on the links above to go to the source movie pages.