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보/고/서

ATIS INTERROGATION REPORT NO. 2022　25 October 1950

FIELD REPORT (164- MISDI - 1125)　18 October 1950

PW was cooperative and information seems fairly reliable. PW has no information on codes and signal.

The 573rd Independent Signal Regt (APO 4273) was composed of 1 x Wireless Bn, 2 x Wire Communication Bns, 1 x CP Communication Bn, a Rear Section, Finance Section, Technical Section, Ordnance Section, and Clothing Supply Section.

573rd Independent Signal Regt

Wireless Communication Bn

1. High Powered Transceiver Co

A. Personnel

(1) EM 12

(2) Officer 3

(3) Total 15

B. Equipment and Ammo

(1) RAF Transceiver 2

Each mounted on ZIS Truck, 500 watt, with range of 2,000 to 1,000 km

(2) SMG 2 (2x71rd drum per)

(3) M1938 Carbine 10 (30 rds per)

(4) TT M1933 Pistol 3 (16 rds per)

2. Medium Powered Transceiver Co

A. Personnel

(1) EM 12

(2) Officer 4

(3) Total 16

B. Equipment and Ammo

(1) RSB Transceiver 3

Each mounted on GAZ Truck, 50 watt, with range of 150 to 75 km

(2) SMG 3 (2x71rd drum per)

(3) M1938 Carbine 9 (30 rds per)

(4) TT M1933 Pistol 4 (16 rds per)

3. Low Powered Transceiver Co

A. Personnel

(1) EM 36

(2) Officer 4

(3) Total 40

B. Equipment and Ammo

(1) RBM Transceiver 12

Carried on back of troops, range 10 to 20 km.

(2) SMG 12 (2x71rd drum per)

(3) M1938 Carbine 24 (30 rds per)

(4) TT M1933 Pistol 4 (16 rds per)

Wire Communication Bn (Each)

A. Personnel

(1) EM 270

(2) Officer 15

(3) Total 285

B. Equipment and Ammo

(1) TAI 43 Field Telephone 280

(2) UNI 32 Field Telephone 80

(3) TT M1933 Pistol 15 (16 rds per)

(4) SMG 36 (2x71rd drum per)

(5) M1938 Carbine 240 (30 rds per)

(6) Wire 90,000 meters

(7) ZIS Truck 3

CP Communication Bn

1. Switchboard Co

A. Personnel

(1) EM 40

(2) Officer 4

(3) Total 44

B. Equipment and Ammo

(1) Switchboard (capacity 30 lines) 8

(2) SMG 8 (2x71rd drum per)

(3) M1938 Carbine 32 (30 rds per)

(4) TT M1933 Pistol 4 (16 rds per)

(5) ZIS Truck 1

2. Teletype Co

A. Personnel

(1) EM 36

(2) Officer 4

(3) Total 40

B. Equipment and Ammo

(1) ST-35 Teletype 6

(2) SMG 6 (2x71rd drum per)

(3) M1938 Carbine 30 (30 rds per)

(4) TT M1933 Pistol 4 (16 rds per)

(5) ZIS Truck 1

3. Wire Communication Co

A. Personnel

(1) EM 84

(2) Officer 4

(3) Total 88

B. Equipment and Ammo

(1) Tan 43 Field Telephone 84

(2) UNI 32 Field Telephone 36

(3) SMG 36 (2x71rd drum per)

(4) M1938 Carbine 45 (30 rds per)

(5) TT M1933 Pistol 4 (16 rds per)

(6) Truck 1

On Sep 50, PW was wounded while on duty with Hq I Corps at SAMGA, Three platoons (High Power Transceiver Platoon and two Medium Power Transceiver Platoons) of the 573rd Independent Signal Regt were on duty with Hq I Corps at that time.

Eight cryptographers (All Sr Lt) from the Ministry of Defense were on duty with Hq I Corps on 6 Sep 50.

PW was inducted on 2 Dec 46 at SINUIJU. PW received training with Constabulary Training School at HOERYONG until October 1948.

During Oct 48, PW was transferred to Central Wireless Bureau located in PYONGYANG as telegraph operator.

During May 49, PW was commissioned as Jr Lt because of general enlargement of NK Army and was assigned to 573rd Signal Battalion (Organized Feb 50) in PYONGYANG.

On 28 Aug 49, the 573rd Signal Bn was redesignated as the 573rd Independent Signal Regt.

On 29 Jun 50, PW and his platoon arrived at YONGC’HON.

On 5 Jul 50, PW and his platoon arrived at SEOUL and was assigned to HQ I Corps.

Hq I Corps arrived at SAMGA on 5 Sep 50.

PW was wounded on 6 Sep 50 and was hospitalized at TAEJON.

On 25 Sep 50, the hospital in TAEJON was disbanded and troops were left to their own accord.

PW was captured 071400 K Oct 50 at TYERYON SAN by ROK 18th Regt as he was trying to make his way home.

NAME: SO, Sang Ju (徐相柱)

RANK: Major (少佐)

DUTY: Commanding Officer

ORGN: 573rd Independent Signal Regt, Wireless Bn

NAME: LEE, Jong In (이종인)

RANK: Col (大佐)

DUTY: Commanding Officer

ORGN: 573rd Independent Signal Regt

NAME: Han, Chol Han (한철한)

RANK: Lt Col (中佐)

DUTY: Ass’t CO (Operation)

ORGN: 573rd Independent Signal Regt

NAME: AN, Dok Ki (安德基)

RANK: Lt Col (中佐)

DUTY: C/S

ORGN: 573rd Independent Signal Regt

NAME: CHANG, Bong Chin (장봉진)

RANK: Lt Col (中佐)

DUTY: C/S

ORGN: 573rd Independent Signal Regt

NAME: KIM, Chang Kuk (金昌國)

RANK: Major (少佐)

DUTY: Commanding Officer

ORGN: 573rd Independent Signal Regt, 1st Bn (Wire Communication)

NAME: KIM, Su Jin (김수진)

RANK: Major (少佐)

DUTY: Commanding Officer

ORGN: 573rd Independent Signal Regt, 2nd Bn (Wire Communication)

Eight Cryptographers (all Sr Lt) were with Hq I Corps at SAMGA on 5 Sep 50.

Messages were coded and brought to the signal unit for transmission. Signal unit personnel were never permitted near the Cryptographer’s room.

PW was able to give the following information concerning codes used by NK Army:

Each word was made up of four digits.

The first four digits of the message signified which code from the code book was to used.

Other details unknown.

For the AC of S, G-2: