Regimental History

[MacMillan of Rathdown]

Not wearing underwear with the kilt is a "recent" phenomenon; long before the mass market in kilts developed kilt makers used to supply "trews" with their kilts. These were usually made of a light wool saxony, although cotton and silk were also supplied. They were rather high waisted, had a drawstring at the waist, a la pajama bottoms, and were snug in the leg, like modern boxer briefs. As men's underwear became more form fitting, and as more men began to wear the kilt, kiltmakers ceased supplying their customers with "trews".

[Woodsheal]

When the Highland regiments got going in the 18th century, kilt-wearing clansmen and soldiers wore the same underwear as everyone else: long shirt tails! (The shirt itself was considered "underwear" in that period.)
Later, actual underwear drawers (short and long) were developed, but the Highland regiments clung to their old practice of shirt-tails only, probably because the Army saw no real need to spend extra money issuing under-drawers to highlanders...!

[thescot]

When the Highland regiments got going in the 18th century, kilt-wearing clansmen and soldiers wore the same underwear as everyone else: long shirt tails! (The shirt itself was considered "underwear" in that period.)
Later, actual underwear drawers (short and long) were developed, but the Highland regiments clung to their old practice of shirt-tails only, probably because the Army saw no real need to spend extra money issuing under-drawers to highlanders...!

Let me tell you, there's a whole lot to be said for a long-tailed shirt between you and the wool, especially in the heat.

Look up Battle of the Shirts. Those were some long shirts!

And I believe you can get someting like that from the wizard himself.

[JolyStNicholas]

Quoting "thescot" "there is a lot to be said" Amen!