Some movies & series that inspired me to a greater or lesser extent in no particular order:
The Bridge on the River Kwai (1957)
The Guns of Navarone (1961)
A Bridge Too Far (1977)
Where Eagles Dare (1968)
Das Boot - The Boat (1981) the TV series
Steiner, Das Eiserne Kreuz - Cross of Iron (1977)
The Big Red One (1980)
Letters from Iwo Jima (2006)
Flags of Our Fathers (2006)
Stalingrad (1993)
Die Schlacht an der Neretva - Bitka na Neretvi - The Battle of the Neretva (1969)
The Longest Day (1962)
Saving Private Ryan (1998)
Brücke - The Bridge (1959)
The Thin Red Line (1998)
Tora! Tora! Tora! (1970)
Band of Brothers (2001) TV series
Platoon (1986)
We Were Soldiers (2002)
Hamburger Hill (1987)
The Deer Hunter (1978)
Full Metal Jacket (1987)
Apocalypse Now (1979)
La Reine Margot (1994)
Paths of Glory (1957)
All Quiet on the Western Front (1930)
Un Long dimanche de fiançailles - A Very Long Engagement (2004)
The Wild Bunch (1969)
Lawrence of Arabia (1962)
Master and Commander (2003)
55 Days at Peking (1963)
Rome (2005) TV series
War and Peace (1956)
The Duellists (1977)
Barry Lyndon (1975)
Doctor Zhivago (1965)
...
Although I feel I could go on for hours, this shall be enough for now.