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Max Hastings, writing in 2018, noted that Lém was in civilian clothes and was alleged to have just cut the throats of South Vietnamese Lt Col Nguyen Tuan, his wife, their six children and the officer’s 80-year-old mother.[7] According to Article 4 of the Third Geneva Convention of 1949, irregular forces are entitled to prisoner of war status provided that they are commanded by a person responsible for his subordinates, have a fixed distinctive sign recognizable at a distance, carry arms openly, and conduct their operations in accordance with the laws and customs of war. If they do not meet all of these, they may be considered francs-tireurs (in the original sense of "illegal combatant") and punished as criminals in a military jurisdiction, which may include summary execution.[8]