[Boyso]

IIRC, it wasn't issued. Officers bought Nambu pistols as their sidearm, but unless you were an high-ranking officer, I doubt you were issued a sidearm.

And I believe you'd see a lot more Nambus than 1903s.

Also, as for the OP, the "Japanese-Garand" wasn't used in the war. Same with the Type 100/40, really little were produced (10,000 iirc) and most were kept for the officers in-land.