I'm on my second time through Eugene Sledge's "With the Old Breed" which is must reading for anyone wanting insight into the horrors of war in the Pacific. The series "The Pacific" is based on this book and several others written with first hand accounts from enlisted Marines that were there. They're the real story from the front lines, not from some rear echelon officer who's only action was to put pins in a map.
I recently acquired my second Arisaka rifle. This one is a fine example of the Type 38 which proceeded the Type 99 of higher caliber. It wasn't fazed out however and continued in use and production into the late war. My first impression of the 99 was that it was big and heavy. The Type 38 however is a real brute. Much longer and heavier than the 99, with the bayonet attached, it stands taller than the average described Japanese soldier. It had to be cumbersome to use in jungle fighting. The one I got has two desirable collector features. One is the Imperial Chrysanthemum seal is intact. At the end of hostilities, the Japanese obliterated the symbol off surrendered weapons to not disgrace the crest of their holy emperor. This means this one was possibly picked up in the field of battle rather than from post surrender. My 99, like most, has the mum symbol ground off. The other harder to find feature is the dust cover which was usually discarded by the troops in the field as a nuisance and just extra weight.

The 99 is on the left. It fired a 7.7 mm round while the longer and heavier 38 fired a smaller 6.5 mm round. I don't fire either. They are prized artifacts. The bayonet I never could get to fit right on the poorly made "last ditch" Type 99 I have snaps right on to the 38. Japanese WWII firearms are inexpensive compared to German Mausers or Lugers which is fine by me since I have more interest in Japanese items than German.

Here both the chrysanthemum symbol and the dust cover can be seen. Japanese symbols are engraved just below the mum symbol but are under the dust cover. It's still got lots of preservative cosmoline yet to be cleaned off.
