UBB.threads Forums General Militaria Japanese Militaria Forum USMC bringback Japanese tags from IWO JIMA HELP!!

Hello, I had these 2 tags walk in my shop from a neibor of a USMC Veteran of WWII. The story was they came from IWO JIMA. I do know this man well and the neibor and such is fine. This first tag I have verified as the "Zhizuka (QUIET or SILENT) Regiment 11963" this translates to the 145th Regiment. This unit was to guard the landing strip on Iwo Jima. Here it is and I will list the 2nd next. Would like help on the line in the middle.

This 2nd Identity disk (Dog Tag) is from the same Iwo Jima supposedly. The unit code is "9704" (this is the CODE ONLY not the unit)and the man #29 the middle line I do not know. Any help on this unit would be MOST grateful. This one is a bit more corroded but still readable. I heard there was a "Well Digging" company on the island and with my luck that is probably this unit. Thank you in advance. Ron

O-yea I forgot to see if the "O" on the first tag is the blood type?

well I have had these on here a while. Does anyone know a person to talk to on this forum that is the leading researcher of the codes or units. It seems ashame we don't have one. Unlike the German side of the War, the Pacific War and the Japanese codes have not had anyone really dig into this challenge. From what I understand the codes were used in the transmission of orders and most communications. Like mentioned if someone knows a person who may have tackled this alittle i sure could use a name. I have a tag from I believe the fight in Mongolia with the Russians in 1939 also, but these 2 tags i have on here now I feel the most interesting due to the fame of this Island Battle.