Missing in action
Missing in action is a casualty classification assigned to combatants, military chaplains, combat medics, and prisoners of war who are reported missing during wartime or ceasefire. They may have been killed, wounded, captured, executed, or deserted. If deceased, neither their remains nor their grave have been positively identified. Becoming MIA has been an occupational risk for as long as there has been warfare.
Problems and solutions
Until around 1912, service personnel in most countries were not routinely issued with ID tags. As a result, if someone was killed in action and their body was not recovered until much later, there was often little or no chance of identifying the remains unless the person in question was carrying items that would identify them, or had marked their clothing or possessions with identifying information. Starting around the time of the First World War, nations began to issue their service personnel with purpose-made identification tags. These were usually made of some form of lightweight metal such as aluminium. However, in the case of the British Army, the material chosen was compressed fiber, which was not very durable. Although wearing identification tags proved to be highly beneficial, the problem remained that bodies could be completely destroyed, burned, or buried by the type of high-explosive munitions routinely used in modern warfare or in destructions of vehicles.Additionally, the combat environment itself could increase the likelihood of missing combatants. The odds of a combatant being declared MIA could be increased by scenarios such as jungle warfare, submarine warfare, aircraft crashes in remote mountainous terrain, or sea battles. Alternatively, there could be administrative errors; the actual location of a temporary battlefield grave could be misidentified or forgotten due to the "fog of war". Finally, since military forces had no strong incentive to keep detailed records of enemy dead, bodies were frequently buried in temporary graves, the locations of which were often lost or obliterated e.g. the forgotten mass grave at Fromelles. As a result, the remains of missing combatants might not be found for many years, if ever. When missing combatants are recovered and cannot be identified after a thorough forensic examination the remains are interred with a tombstone which indicates their unknown status.
The development of genetic fingerprinting in the late 20th century means that if cell samples from a cheek swab are collected from service personnel prior to deployment to a combat zone, identity can be established using even a small fragment of human remains. Although it is possible to take genetic samples from a close relative of the missing person, it is preferable to collect such samples directly from the subjects themselves. It is a fact of warfare that some combatants are likely to go missing in action and never be found. However, by wearing identification tags and using modern technology, the numbers involved can be considerably reduced. In addition to the obvious military advantages, conclusively identifying the remains of missing service personnel is highly beneficial to the surviving relatives. Having positive identification makes it somewhat easier to come to terms with their loss and move on with their lives. Otherwise, some relatives may suspect that the missing person is still alive somewhere and may return someday. However, many of these identifying procedures are not typically used for combatants who are members of militias, mercenary armies, insurrections, and other irregular forces.
History
Before the 20th century
The numerous wars that have occurred over the centuries have created many MIAs. The list is long and includes most battles that have ever been fought by any nation. The usual problems of identification caused by rapid decomposition were exacerbated by the fact that it was common practice to loot the remains of the dead for any valuables e.g. personal items and clothing. This made the already difficult task of identification even harder. Thereafter, the dead were routinely buried in mass graves and scant official records were retained. Notable examples include such medieval battles as Towton, the Hundred Years' War, The Battle of Alcácer Quibir where King Sebastian of Portugal disappeared, the later English Civil Wars, and Napoleonic Wars together with any battle taking place until around the middle of the 19th century.Starting around the time of the Crimean War, American Civil War, and Franco-Prussian War, it became more common to make formal efforts to identify individual soldiers. However, since there was no formal system of ID tags at the time, this could be difficult during the process of battlefield clearance. Even so, there had been a notable shift in perceptions e.g. where the remains of a soldier in Confederate uniform were recovered from, say, the Gettysburg battlefield, he would be interred in a single grave with a headstone which stated that he was an unknown Confederate soldier. This change in attitudes coincided with the Geneva Conventions, the first of which was signed in 1864. Although the First Geneva Convention did not specifically address the issue of MIAs, the reasoning behind it was influential. The Geneva Convention was in part inspired by the experiences of Henri Dunant after the Battle of Solferino in 1859, where 40,000 wounded soldiers had lingered in agony for lack of care, facilities and logistics to ameliorate their condition. Dunant also founded the Red Cross, an organization dedicated to reducing the suffering of those wounded in war and ensuring humane treatment of POWs. Summary executions of POWs are another common cause for casualties to become missing in action. The Hague Convention of 1899 was the first piece of codified International law to explicitly outlaw such collective punishment as it banned "no quarter". Now any execution of POWs would require a formal court martial creating a paper trail — at least for armed forces that followed the Laws of War.
Technology and logistics had also changed, allowing for better handling of the dead. Railroads were used during the Crimean War and played a decisive role in several battles of the American Civil War and – especially the quick mobilisation of Prussian and allied forces – at the beginning of the Franco-Prussian War. Where previously there were hardly any alternatives to bury the dead close to where they fell before their bodies decomposed, now they could – if logistics allowed – be transported elsewhere for identification and proper burial. Those killed in action at sea had previously simply been thrown overboard or their bodies pickled in distilled alcohol for preservation. Now, steamships allowed for much quicker transport than sailing or rowing vessels ever had.
World War I
The phenomenon of MIAs became particularly notable during World War I, where the mechanized nature of modern warfare meant that a single battle could cause astounding numbers of casualties. For example, in 1916, over 300,000 Allied and German combatants were killed in the Battle of the Somme. A total of 19,240 British and Commonwealth combatants were killed in action or died of wounds on the first day of that battle alone. It is therefore not surprising that the Thiepval Memorial to the Missing of the Somme in France bears the names of 72,090 British and Commonwealth combatants, all of whom went missing in action during the Battle of the Somme, were never found, and have no known grave. Similarly, the Menin Gate memorial in Belgium commemorates 54,896 missing Allied combatants who are known to have been killed in the Ypres Salient. The Douaumont ossuary, meanwhile, contains 130,000 unidentifiable sets of French and German remains from the Battle of Verdun.Even in the 21st century, the remains of missing combatants are recovered from the former battlefields of the Western Front every year. These discoveries happen regularly, often during the course of agricultural work or construction projects. Typically, the remains of one or several men are found at a time. However, occasionally the numbers recovered are much larger, such as the mass grave at Fromelles, which contained the skeletal remains of no less than 250 Allied soldiers. Another example is the excavation which took place at Carspach in early 2012, which uncovered the remains of 21 German soldiers, lost in an underground shelter since 1918, after being buried by a large-calibre British artillery shell. Regardless, efforts are made to identify any remains found via a thorough forensic examination. If this is achieved, attempts are made to trace any living relatives. However, it is frequently impossible to identify the remains, other than to establish some basic details of the unit they served with. In the case of British and Commonwealth MIAs, the headstone is inscribed with the maximum amount of information that is known about the person. Typically, such information is deduced from metallic objects such as brass buttons and shoulder flashes bearing regimental/unit insignia found on the body. As a result, headstones are inscribed with such information as "A Soldier of The Cameronians" or "An Australian Corporal" etc. Where nothing is known other than the soldier's national allegiance, the headstone is inscribed "A Soldier of The Great War". The term "Sailor" or "Airman" can be substituted, as appropriate.
World War II
There are many missing combatants and other persons in service from World War II.In the United States Armed Forces, 78,750 personnel missing in action had been reported by the end of the war, representing over 19 percent of the total of 405,399 killed during the conflict.
As with MIAs from the First World War, it is a routine occurrence for the remains of missing personnel killed during the Second World War to be periodically discovered. Usually they are found purely by chance though on some occasions they are recovered following deliberate, targeted searches. As with the First World War, in western Europe MIAs are generally found as individuals, or in twos or threes. However, sometimes the numbers in a group are considerably larger e.g. the mass grave at Villeneuve-Loubet, which contained the remains of 14 German soldiers killed in August 1944. Others are located at remote aircraft crash sites in various countries.
But in eastern Europe and Russia, World War II casualties include approximately two million missing Germans, and many mass graves remain to be found. Almost half a million German MIAs have been buried in new graves since the end of the Cold War. Most of them will stay unknown. The German War Graves Commission is spearheading the effort. Similarly, there are approximately 4 million missing Russian service personnel scattered across the former Eastern Front, from Leningrad down to Stalingrad, though around 300 volunteer groups make periodic searches of old battlefields to recover human remains for identification and reburial.
During the 2000s, there was renewed attention within and without the U.S. military to finding remains of the missing, especially in the European Theatre and especially since aging witnesses and local historians were dying off. The group World War II Families for the Return of the Missing was founded in 2005 to work with the Joint POW/MIA Accounting Command and other governmental entities towards locating and repatriating the remains of Americans lost in the conflict. The president of the group said in reference to the far more publicised efforts to find remains of U.S. dead from the Vietnam War, "Vietnam had advocates. This was an older generation, and they didn't know who to turn to."
In 2008, investigators began to conduct searches on Tarawa atoll in the Pacific Ocean, trying to locate the remains of 139 American Marines, missing since the Battle of Tarawa in 1943. Between 2013 and 2016, the remains of 37 US Marines were recovered from Tarawa. Among those recovered was Medal of Honor recipient Alexander Bonnyman.
According to official US Department of Army and Department of Navy casualty records, submitted to Congress in 1946 and updated in 1953, the combined possible total of missing service personnel worldwide is closer to approximately 6600 and probably considerably fewer. Significantly, DPAA continues to list as "unaccounted for" the five Sullivan brothers—arguably the single most accounted-for group of WWII casualties ever recorded. Since DPAA alone designates such WWII personnel as the entire crew of the and most of the crew of the as both "missing" and "unaccounted for" it is likely that DPAA records keeping is irregular and prone to opinion rather than fact.
As of December 25, 2025, according to the U.S. Department of Defense POW/MIA Accounting Agency, there were a total of 73,685 MIAs, of whom 1,879 are accounted for and 71,806 remain unaccounted for.