Army on the left, Navy Landing Force on the right.

The Army guys name was Miyazaki (ミヤザキ).

 

The Navy one seems to have numbers on it but cannot see it well enough to tell what they are.

robinb,

This is just in case you may not know...the army canteen is for enlisted men and different then the officers canteen. If you pull the bottle out of the harness and look on the bottom of the bottle, there is usually a stamp showing the year it was made. The navy canteen was standard for both enlisted and officers...the numbers on the front of the cover can be a personal ID or a unit.