In this 1935 flick, our heroes travel to Scotland via cattle boat to claim an inheritance from "Uncle MacLaurel." There, they inadvertently enlist in a Highland regiment and are shipped off to India.

The between-wars Scottish uniforms look just right, complete with pith helmets (with hackles) for India service, khaki kilt aprons, the darker (presumably black & red) diced hose, and Short Model Lee Enfields.
In the barracks scene where the soldiers have their tunics off, you can clearly see how high the military kilts were/are worn. Some of the troops are wearing them at nipple level!

A funny movie, as are all the L & H pictures....