Why is it called going 'commando'?

i don't understand why that term is associated with going without underwear.

And. I don't understand why I'm wondering. Being sick does strange things to me

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SW-User

The term “commando” refers to a type of military unit that operates in stealth and camouflage, not to do with undergarments. The phrase actually stems from the South African Defense Force’s elite unit, the “Recces,” who allegedly wore no underwear as a practical and stealthy measure during missions. The term eventually spread to describe anyone who chose to wear no underwear, but this was not its original intention.