I will watch most of their films but was wondering if use guys think.

Any suggestions?

Easy choice:

They Were Expendable, about US Navy PT Boats fighting the Japanese in the Philippines in the early days of WW2.

One of my favorite classic war films. And one of the few non-Western films starring both John Wayne and Ward Bond.

The Quiet Man.

Second vote for "They were Expendable"!
Found this on Wikipedia regarding co-star Robert Montgomery. I'd read somewhere he actually was involved with PT boats in the Pacific during WW2:

After the U.S. entered World War II in December 1941, he joined the United States Navy, rising to the rank of lieutenant commander, and served on the staff of the commander of Destroyer Squadrons 5 and 60; commanding officer PT-107; aboard the light cruiser USS Columbia; as an assistant naval attache at the U.S. Embassy, London; and as the executive officer of Motor Torpedo Boat 5 (PT-5).[citation needed][a]
In 1945, Montgomery returned to Hollywood, co-starring and making his uncredited directing debut in They Were Expendable, where he directed some of the PT boat scenes when director John Ford was unable to work for health reasons.

Wings of Eagles.

Operation Pacific, Sub movie with some real occurrences in it... Ward Bond is wounded topside and orders "Take her down" Commander Gilmore of the Growler actually did that to save the lives of his crew. The were a couple of impromptu Appendices operations on subs during the war...

60

2nd vote for Quiet Man.

One more vote for The Quiet Man. Usually gets watched a couple of times a year as well as being a staple on St. Patrick's Day.

The Quiet Man is probably my favorite John Wayne film.

The Green Berets.

^^^ Ward Bond wasn't in that one. He died in 1960.

Fort Apache, 3 Godfathers, Hondo. and briefly in Rio Bravo