>>882
ジャングルでの有効性も、米軍にとっては
こんな感じだったらしい…本当すかWiki先生?

The U.S. Marines also used the Thompson as a limited-issue weapon,
especially during their later island assaults. The Thompson was soon found to have
limited effect in heavy jungle cover, where the low-velocity .45 bullet
would not penetrate most small-diameter trees or protective armor vests.
(中略)
In the U.S. Army, many Pacific War jungle patrols were originally equipped with Thompsons
in the early phases of the New Guinea and Guadalcanal campaigns,
but soon began employing the Browning Automatic Rifle in its place
as a point defense weapon

https://en.m.wikipedia.org/wiki/Thompson_submachine_gun
まあ、何と言うか贅沢な代替品を用意出来てた模様