US troops firing Mortar on Guam
Here we see US troops firing a mortar during the battle of Guam. From this angle the exact type of mortar isn't easy to identify.
How to cite this article:
Rickard, J (19 December 2021), US troops firing Mortar on Guam , http://www.historyofwar.org/Pictures/pictures_firing_mortar_guam.html