Considering that particular corporate brand stemmed from a company which profited by starving and working to death captured British, American, and Austrailian service personnel... all I can say is they can take thier pens and shove them up their arse. Not holding the Japanese industrialists accountable in the same manner we did German ones in the aftermath of WW-2 was a grave error.
Mistsubishi Pencil Co Ltd is nothing to do with the Mistubishi zaibatsu, famed for it's Zeros, Zekes and Evos.
Fair play to them - if you own a company that makes pens and you want to do something for Armed Forces Day you're a bit limited in your options. A free pressurised pen to any military folk that want one is a nice gesture. Good on em.