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USMC Casualties

World War II  ·  Inter-War  ·  Korea  ·  Vietnam

Search transcribed Official USMC Casualty Cards. We have transcribed over 166,940 Marine Corps Casualty Cards and linked this information to other data in our database. This page documents the casualty type codes, unit designation conventions, and statistical breakdown by conflict era.

166,940 Total Records
29,871 KIA
4,697 Died of Wounds
90,201 WIA
882 MIA ? KIA

About the Collection

The United States Marine Corps casualty cards assembled here represent one of the most granular primary-source records of American military service available to researchers and families. Drawn from four distinct datasets — World War II, the inter-war period, the Korean War, and the Vietnam War — these 166,940 digitized records document the personal particulars, unit assignment, date, and type of casualty for every Marine whose status changed as a result of combat, accident, disease, or captivity.

The largest single dataset is the World War II file, containing 88,837 records, reflecting the enormous scale of Pacific and Atlantic operations. The Vietnam-era file of 40,234 records and the Korean War file of 29,128 records document the two major post-war conflicts. The inter-war file of 8,741 records covers the period between the wars — occupations in Haiti, Nicaragua, and China — where non-combat causes dominate: 4,074 accidental injuries, 2,800 disease deaths, and 929 other non-combat deaths account for nearly 90% of entries against only 22 KIA.

Across all four datasets, unit designations have been algorithmically parsed to extract discrete fields for company, battalion, regiment, division, and higher command. Korean War entries use a hyphenated shorthand (B-1-7), Vietnam-era records use a long form (CO E 2DBN 5THMAR 1STMARDIV FMF), and World War II entries use a mixture of both. The TypeofCasualty field uses over 30 distinct abbreviation codes documented in full below.

Researching a specific Marine? Each record contains the service member's full name, service number, unit designation, date of casualty, and casualty type. Contact the museum for assistance searching any of the four datasets by name or service number. For official service records, the National Personnel Records Center (NPRC) in St. Louis, Missouri is the authoritative government source.

Records by Era

Era Records KIA WIA DOW Non-Hostile Deaths
World War II 88,837 15,191 55,659 2,580 4,034
Inter-War 8,741 22 153 4 7,810
Korean War 29,128 3,521 21,720 516 996
Vietnam War 40,234 11,137 12,669 1,597 10,769
Total 166,940 29,871 90,201 4,697 23,609

TypeofCasualty Code Reference

Every abbreviation found in the TypeofCasualty column across all four source files, with counts aggregated from 166,940 records. The Eras column shows which datasets contain each code.

Category key: Hostile Combat/enemy action Non-hostile Accident or disease Status Captivity/missing Admin Administrative entry Other
Core Casualty Types
Code Meaning Category Eras Present Count
KIAKilled in actionHostileAll eras29,871
DOWDied of wounds (received in hostile action)HostileAll eras4,697
WIAWounded in action (survived)HostileAll eras90,201
WIANEWounded in action, not evacuated — minor wound, remained on dutyHostileInter-War, Vietnam3,934
DAIDied, accidental injuries (non-hostile)Non-hostileAll eras9,598
DODDied of diseaseNon-hostileInter-War, Vietnam6,574
DOCDied, other causes (non-hostile, non-disease)Non-hostileAll eras2,760
ADAccidental death (WWII-era form of DAI)Non-hostileWWII, Inter-War, Korea2,945
DISDisease / disability — non-fatal illness or injuryNon-hostileWWII, Korea1,704
ACCAccidental injury, non-combat (survived)Non-hostileInter-War, Korea1,525
INJInjured, non-combat (survived)Non-hostileWWII, Korea925
DDDied of disease (WWII alternate form of DOD)Non-hostileWWII725
AUTAutomotive / vehicle accidentNon-hostileKorea484
DRODrowningNon-hostileWWII, Korea149
AERAeronautical accident (aviation-related)Non-hostileKorea138
SUISuicideNon-hostileWWII87
GUNGunshot wound — accidental, non-combatNon-hostileKorea49
KAIKilled, accidental injuries (non-hostile)Non-hostileVietnam13
POIPoisoningNon-hostileKorea3
Captivity & Missing
Code Meaning Category Eras Present Count
MIAMissing in actionStatusAll eras49
MIA-KIAMissing in action — subsequently declared killed in actionStatusWWII781
MIA TO KIAStatus change from MIA to KIA (Korean War form)StatusKorea94
POWPrisoner of warStatusWWII, Korea, Vietnam82
POW-KIAPrisoner of war — died in captivity or killedStatusWWII232
POW-DDPrisoner of war — died of disease in captivityStatusWWII108
CPTD / CPTRCapturedStatusVietnam5
RMCReturned to military control (POW or MIA returned alive)StatusKorea, Vietnam194
Administrative & Record Corrections
Code Meaning Category Eras Present Count
SS (CF)Struck from strength, casualty final — formal record closure for MIA declared deceasedAdminWWII4,125
CFCasualty final — final determination of statusAdminWWII1,333
SSStruck from strength — removed from unit muster rollsAdminWWII1,111
DELETE FR …Record correction — entry deleted from the listed categoryAdminWWII, Korea~1,900
… TO …Status change — e.g. MIA TO KIA, WIA TO DOWAdminKorea, Vietnam~110
DIADied in action (alternate / early-record form of KIA)AdminInter-War, Vietnam13
DOADied on arrival (medical)OtherInter-War2
IHEIn-hospital error / died due to medical errorOtherWWII6
Notes: AD (Accidental Death) and DAI (Died, Accidental Injuries) carry the same meaning but appear in different eras — AD dominates WWII records while DAI is standard in Vietnam-era records. DD and DOD are equivalent; DD is the WWII form. WIANE is absent from the WWII and Korean War files entirely. SS, SS (CF), and CF are almost entirely confined to the WWII dataset, reflecting the large volume of Pacific theater MIA cases requiring post-war administrative resolution. RMC appears primarily in Korea (185 of 194 total entries), consistent with prisoner repatriation following the 1953 armistice.

Frequently Asked Questions

USMC casualty cards are official Marine Corps administrative records created whenever a service member's status changed due to combat, accident, disease, captivity, or death. Each card captures full name, service number, unit assignment, date of casualty, and a coded casualty type. The four datasets here cover: World War II (88,837 records), the inter-war era (8,741 records), the Korean War (29,128 records), and the Vietnam War (40,234 records) — 166,940 total. The records were originally maintained by Headquarters, USMC, and digitized to support genealogical research, historical scholarship, and veteran recognition.

KIA (Killed in Action) designates a Marine who died at the scene of battle as a direct result of enemy action. DOW (Died of Wounds) designates a Marine who survived the initial wounding but later died from those wounds — often at a field hospital days or weeks after the engagement. Across all four datasets: 29,871 KIA and 4,697 DOW. World War II dominates with 15,191 KIA and 2,580 DOW, followed by Vietnam (11,137 KIA / 1,597 DOW) and Korea (3,521 KIA / 516 DOW). The inter-war file has only 22 KIA and 4 DOW.

The inter-war dataset covers a period without large-scale conventional conflict. Marines served in occupation and intervention roles in Haiti, Nicaragua, and China, and faced the environmental hazards of extended deployments far from modern medical facilities. Of 8,741 records, nearly 90% are non-hostile deaths: 4,074 accidental injuries (DAI), 2,800 disease deaths (DOD), and 929 other non-combat deaths (DOC). Only 22 KIA entries exist for the entire period. This dataset offers a rare view into the everyday dangers of Corps service that rarely appear in conventional military histories.

WIANE (Wounded in Action, Not Evacuated) was applied when a Marine sustained a combat wound but the injury was minor enough to remain with their unit rather than be evacuated. It accounts for 3,917 of the 40,234 Vietnam records — nearly 10% — yet is completely absent from the WWII and Korean War datasets and appears only 18 times in the inter-war file. This reflects a shift in casualty reporting doctrine adopted in Vietnam, where the Corps more systematically tracked non-evacuation wounds as a distinct administrative category.

The original records stored unit information as a single free-text string — for example CO K 3DBN 9THMAR 2DMARDIV(REIN) FMF or the Korean War shorthand B-1-7. A rule-based parser extracts five components: company or battery designator, battalion, regiment, division, and higher command (FMF, FMFPAC, FMFLANT). The parser handles each era's distinct naming conventions, quoted company letters, written-out ordinals (THIRD MARDIV), BLT slash notation (BLT 2/3), and specialist units including H&S companies and tank battalions. Coverage reaches 62–85% of rows depending on field.

"Struck from Strength" means formal removal from the unit muster roll. SS (CF) — Struck from Strength, Casualty Final — was the administrative closure for MIA cases formally declared deceased. Its 4,125 entries are concentrated almost entirely in the WWII file, reflecting Pacific theater MIA cases resolved after 1945. RMC (Returned to Military Control) is the mirror entry for survivors; 185 of 194 total RMC entries are in the Korean War dataset, from post-armistice prisoner repatriation in 1953.

Each record includes last name, first name, middle name, service number, unit, date of casualty, and casualty type. Contact the Sons of Liberty Museum for assistance searching across all four datasets. To search directly, use the USMC Casualty Cards search page. For official military service records, the National Personnel Records Center (NPRC) in St. Louis is the authoritative government source.

DELETE FR entries are administrative corrections when a casualty classification was found to be in error — for example, a Marine initially reported KIA who was later found alive as a POW. The approximately 1,900 such entries are concentrated in the WWII dataset, reflecting the complexity of resolving Pacific MIA and POW cases after 1945. Status-change entries like MIA TO KIA or WIA TO DOW reflect formal revisions as new information became available.

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