
Gervase Duan Spradlin (August 31, 1920 – July 24, 2011) was an American actor. Known for his distinctive accent and voice, he often played devious authority figures.
Description above from the Wikipedia article G. D. Spradlin, licensed under CC-BY-SA, full list of contributors on Wikipedia.

The Godfather Part II
1974 · as Senator Pat Geary

Apocalypse Now
1979 · as General Corman

The Long Kiss Goodnight
1996 · as President

Tora! Tora! Tora!
1970 · as Cmdr. Maurice E. Curts (uncredited)

The War of the Roses
1989 · as Harry Thurmont

Ed Wood
1994 · as Reverend Lemon

Nick of Time
1995 · as Mystery Man

Resting Place
1986 · as Sam Jennings

Dick
1999 · as Ben Bradlee

The Godfather Trilogy: 1901-1980
1992 · as Senator Pat Geary

Tank
1984 · as Sheriff Buelton

Will Penny
1967 · as Anse Howard

Zabriskie Point
1970 · as Lee's Associate

Wrong Is Right
1982 · as Philindros

Canadian Bacon
1995 · as R.J. Hacker

The Godfather: The Complete Epic 1901–1959
2016 · as Sen. Patrick Geary

MacArthur
1977 · as General Eichelberger

The Hunting Party
1971 · as Sam Bayard