Buddy films almost always have two clashing personalities at the core. Butch and Sundance, Woody and Buzz, Thunderbolt and Lightfoot, Thelma and Louise — more often than not it’s the Hardass and the Free Spirit, or the Mentor and the Newcomer, or the Brainiac and the Simpleton. But as far as the casting goes you can usually say cool: those two guys will be great together. Newman and Redford is a more obvious pairing than Hanks and Allen, but the latter’s not strange enough to raise any eyebrows.
But Jackie Gleason and Steve McQueen? That’s not an immediate sell as a buddy-comedy duo, is it? Each of them is legendary, but in a different fashion. Gleason is a comedic entertainer at heart, delivering highly effective drama in smaller portions in The Hustler and a handful of other notables; McQueen, meanwhile, would build his career on strong silent types even in his lesser-known dramas, from The Sand Pebbles to The Getaway. He would rarely do comedy, and Gleason would rarely share the limelight in any of his comedic films (not intentionally, of course; he just stole the show pretty much every time). So perhaps a Gleason/McQueen team-up isn’t inherently strange until you consider that a) it’s a comedy with the duo sharing top billing, b) it’s fairly dramatic at times in a satirical Catch-22 sort of way (more on that in a minute), and c) McQueen is the loopy goofball and Gleason is the knowing-smile know-it-all. That said, the most important consideration is d) Soldier in the Rain is highly underrated.