You are here: Home | Japanese Index | Japanese Related Information about Yap

Japanese WWII Information about Yap Island from Shigetoshi Kawanabe and Yukitoshi Yamashita
Shigetoshi Kawanabe in 1945 and on his return to Yap Island in 1975.
Click to enlarge the pictures.

The following information and pictures has been supplied by Shigetoshi Kawanabe and Yukitoshi Yamashita from Japan. Yukitoshi Yamashita located my Missing Air Crew Project web site a few years ago and has supplied a lot of invaluable information from the Japanese perspective that has helped me understand both sides of the war.

I can't thank Yukitoshi Yamashita enough for his continued help to document the Japanese history of Yap Island during WWII. It's as important to me as documenting the American side.

Contacting Japanese Who Served on Yap during WWII

Japanese maps of Yap Island showing defensive positions
Japanese maps of Yap Island showing defensive positions #1
Japanese maps of Yap Island showing defensive positions
Japanese maps of Yap Island showing defensive positions #2
For a number of years I have been trying to find away to contact someone in Japan who could put me in touch with Japanese men who served on Yap during the war.

Yukitoshi Yamashita was able to locate Shigetoshi Kawanabe who was the CO of the AA unit of the 49th Independent Mixed Brigadean officer. He was in charge of the Japanese AA units in the area of the 324th Independent-Infantry-Battalion (324.ibs) marked clearly on the following map (click to enlarge the map). This area included part of the Yap harbor and the immediate area around Colonia (called Yap Town during the war by the American forces). The Japanese naval units and 326th Ind.-Inf.-Btl. Controlled the AA units near the main airfield.

Seeking American's who flew Yap missions to communicate with Mr. Kawanabe

Mr. Kawanabe is very interested in getting to know any American men who flew missions to Yap Island in 1944. He is especially interested in men who particiapted in attacks From July 25 to 30, 1944 and from September 5 to 10, 1944. Please contact me if you would like to be put in touch with Mr. Kawanabe:

Capt. Kawanabe, CO of the AA unit of the 49th Independent Mixed Brigade (1945 and 1975):

6 September 1945 Yap Island

6 September 1945, the Japanese Army and Navy were disarmed in the presence of the U. S. Forces. The anti-aircraft guns were ordered to remove the breech.
(1) Lt.Col. Mieno, Staff of the 49th Independent Mixed Brigade
(2) Capt. Kawanabe, CO of the AA unit of the 49th Independent Mixed Brigade.
Click on the picture to enlarge.

Mr. Kawanabe (upper) at AA position in February 1975.

The memorial service by army AA unit's veterans in 22 February 1975.
"For the sake of spirits of the heroic dead of japanese and U. S. soldiers"

The memorial service by Kawanabe in 1970. L to R...
"For the sake of spirits of the heroic dead of all japanese soldiers"
"For the sake of spirits of the heroic dead of army AA artilleries"
"For the sake of spirits of the heroic dead of U. S. soldiers"

Return to top

Interview with Mr. Kawanabe (Japanese AA Officer Stationed on Yap) by Mr. Yamashita from Japan:

Interview with Mr. Kawanabe conducted by Mr. Yamashita from Japan. Translation by Daniel King with

    Dear Pat,

    US Marines and Japanese Officers review Japanese 75 millimeter AA gun in hills back of Yap town after the war ended. Yap Island 1945. 6 September 1945, the Japanese Army and Navy were disarmed in the presence of the U. S. Forces. The anti-aircraft guns were ordered to remove the breech. (1) Lt.Col. Mieno, Staff of the 49th Independent Mixed Brigade (2) Capt. Kawanabe, CO of the AA unit of the 49th Independent Mixed Brigade. Click on the picture to enlarge.
    In your emails you sent to me you often used the word "Execute" however I have never evidence of Yap's Brigade HQ issuing execution orders against POWs who willingly surrendered. POWs taken on Yap were sent to Palau where they may have received rough treatment.

    Yap's Brigade Commander Col. Eto ordered his men not to pillage the Yap native's food supplies. This is order was obeyed even to the point of many Japanese starving to death.

    After the war Mr. Kawanabe, along with others, made 5 separate trips to Yap. They set up a Stupa and said prayers for the dead comrades of the AA unit, all the dead Japanese in general as well as the natives and enemy who lost their lives during the Yap campaign. Mr. Kawanabe, being a minister, donated supplies the school children of Yap but kept these activities private to this day. I believe the Japanese officers and men on Yap conducted themselves properly during the war.

    I asked Mr. Kawanabe several questions about the POWs but time has dulled his memory so some of his recollections may differ regarding dates and numbers.

    Yamashita: Did you look for the down aircrews?

    Kawanabe: A naval guard unit and an Army construction unit went out to look for the enemy airmen. They were the only ones who possessed Daihatsu (boats).

    Yamashita: Did you actually see the POWs?

    Kawanabe: Early in the morning in mid-July 1944 Japanese Army soldiers defending the island's northeast spotted two Americans. They were recon officers who were naked carrying pistols and surrendered without a struggle. (Translator's Note: The Japanese text says "Naked" but possibly they were wearing tan UDT shorts? - Dan)

    The two were questioned by a young officer at Brigade HQ. It was learned the pair were sent to scout the island but in their zeal had gone inland where they were discovered. The two had intended to depart via submarine which seems to have left without them. I myself didn't see these two POWs.

    Japanese Model 10 (1921) 12-cm naval AA guns on Yap Island. Picture taken during the Missing Air Crew Project search trip in September 2006. Additional pictures of the guns can be viewed at the following link: AA guns on Yap Island
    On another instance, a Naval 12 cm AA gun shot down a B-24. The craft took a direct hit in the tail and went down. Right before it crashed there were crewmen who bailed out. I actually saw their chutes in the sky. However, I never met them face-to-face. The men were rescued and taken to Brigade HQ for questioning. They had a detailed bombing map which I saw several days later during a meeting with our Unit Commander. The map was quite detailed causing me to respect our enemy's recon capabilities. I also learned the POWs stated that several B-24s ditched into sea after their bombing runs on Yap. This gave me heart to learn that our defensive efforts were not totally in vain. The POWs were on Yap for about a week before being sent to Headquarters of the Palau Islands Group.

    Note from Mr. Yamashita. The dates are different but Mr. Kawanabe is mostly likely referring to the captured UDT men and the Anthony crew.

    Note from Pat Ranfranz. More information about the captured UDT men and the Anthony crew can be located at: Anthony Crew Info & Info UDT Men Info.

    Yamashita: Please tell me about the Sept 6, 1944 attack. Did you go see the downed plane? Were there any POWs taken?

    Kawanabe: I recall it being Sept 5th. The unit commanders were gathered together conducting inspections. That afternoon I was conducting an inspection near Madeqdeq (Mt. Mutate). It was then we were attacked by carrier-based planes and I rushed back to my unit. A 2nd Lt. reported the downing of an enemy plane to me. He reported saying, "A formation of two planes followed by a second formation of 2 planes headed towards our position. I (the 2nd Lt.) gave the order for all 4 of my AA guns to fire. One of the shots hit between the first two planes causing one of their bombs to explode which brought down all 4 planes."

    The next day the enemy came back for vengeance. A direct hit knocked out one of the AA guns killing twelve. Many of the dead were unrecognizable. This caused a drop in morale. Without waiting for permission from above, I ordered the AA crews to cease firing and they did not fire another shot for the rest of the war.

    (Note from Mr. Yamashita. The 12 men were recorded as being killed on Sept. 7th so the four plane US raid must have occurred the day before on the 6th of Sept.)

    Yamashita: The Americans never invaded Yap. The only units on Yap that saw action were the Army and Naval AA units. The men of the AA units were always on alert and at their posts until dark each day giving them no time to be involved in searching for downed enemy airmen or visiting crash sites.

    The summer of 1944 brought hunger and starvation to Yap as supplies were halted. The men were forced to forage for their own food. Mr. Kawanabe's unit went into the hills to prepare tank traps for the expected invasion.

    There is written record of the Naval Auto cannon unit called "Tojotai" downing a US plane on Feb 3rd 1945. The unit was armed with 25mm guns stationed near Colonia. The plane shot down must have belonged to 1st Lt. Posluszny.

    Tank Traps = Mr. Kawanabe was tasked with setting up anti-tank defenses in the hills using AA guns to be fired horizontally against the expected US invasion forces.

    Japanese Morale Dropped = Japanese lost air and sea supremecy and as such the amount of supplies and AA ammo became limited.

    Rough Treatment = Mr. Yamashita feels the POWs sent to Palau might have been sunk on a transport to the Philippines or possibly killed in a Philippine POW camp.

Please submit additional information.

Return to top

Japanese maps of Yap Island showing defensive positions:
Click on the following thumbnail images to enlarge:

The following Japanese maps of Yap Island are courtesy of Yukitoshi Yamashita from Japan.

The maps show the defensive positions on Yap in preparation for an US invasion that never came. The US decided to go around Yap and invaded Sapian and Guam. The pictures are from the out-of-print book, "Senshi-Sousho vol.13."

Return to top

Submit comments about this site

Follow the Missing Air Crew Project On:   Follow Us on Facebook  Follow Via YouTube

Web Site Terms of Use: This web site authorizes you to view materials solely for your personal, non-commercial use. You may not sell or modify the material or reproduce, display, distribute, or otherwise use the material in any way for any public or commercial purpose without the written permission of the web site owner.

This site is owned & developed by Patrick Ranfranz of Cameron, Wisconsin, USA
Email: | 1473 21 1/2 Street, Cameron, WI 54822

Copyright Notice: All images and text on this website are protected by U.S. and International Copyright Law.
No images or text should be copied, downloaded, transferred, or reproduced without the written consent
of Patrick Ranfranz/ Images. If you wish to use any materials
(images or text), please contact:

® Copyright,®, All rights reserved.

Help support this site, order your materials through this link.

Site Map