Case Study in Guerrilla Warfare: Greece in World War II

On This Day in History — The 20 July Plot: What Operation Valkyrie Teaches About Internal Resistance

On this day in history — 20 July 1944 — a decorated colonel set a briefcase down a few feet from Adolf Hitler and walked out of the room. The charge detonated at 12:42. Within twelve hours, the officers who planned the coup were dead or in custody. In this On This Day in History episode, we take apart the 20 July plot — Operation Valkyrie — not as a story of noble failure, but as the most fully developed attempt to overthrow a modern totalitarian state from inside its own command structure, and a near-complete catalogue of what internal resistance demands and how it comes apart. We trace the twelve hours from the blast in the conference hut to the rifle volley in the Bendlerblock courtyard, and pull out the operational lessons that still hold: why a plan built on a single decisive act inherits a single point of failure; why control of communications and infrastructure is the operation and not a supporting task; why authority drafted on paper is worthless if it can't be asserted in the street inside the first hour; and why the secrecy that keeps a conspiracy alive can starve the mobilization it needs to win. The conspirators had courage and they had access. This is a study of everything else the operation required — and didn't have.

Threshold of Violence

Why do some resistance movements collapse the moment they turn to violence, while others sustain decades-long campaigns? In this episode, we explore Dr. Gordon McCormick's equivalent response model and the concept of a "band of excellence" — the narrow range of violence that lets insurgents signal strength without triggering the backlash that destroys them. We trace how movements like the LTTE evolved from small guerrilla acts into a conventional fighting force, and how a single miscalculation — the assassination of Indian Prime Minister Rajiv Gandhi — cost them a vital external sanctuary. We look at al-Qaeda in Iraq, where Zarqawi's brutality against fellow Muslims triggered the Anbar Awakening, and at Sri Lanka's JVP, whose threats against soldiers' families provoked a swift and overwhelming state response. Along the way, we examine how political and economic hierarchies, foreign audiences, and simple trial-and-error shape where these thresholds actually sit. In the second half, we turn to the question of rationality itself: is violence a calculated tool, or does it follow its own internal logic once movements are underway? Drawing on rational choice theory, bounded rationality, and the psychology of fence-sitting populations, we unpack why insurgent decisions that look reckless in hindsight often make perfect sense from the inside — and why that internal logic so often fails to predict the reaction it provokes. A study in how violence communicates, how legitimacy is won and lost, and why restraint is sometimes the more strategic weapon.

Case Study: The American Revolution

Two hundred and fifty years after the Declaration of Independence, this episode examines the American Revolution the way US Army Special Operations Command does: as an insurgency. The ARIS case study The Patriot Insurgency (1763-1789), written by Robert R. Leonhard and a Johns Hopkins Applied Physics Laboratory team, sets aside the commemorative narrative and maps the Patriots against modern insurgency doctrine. The episode covers the four simultaneous wars the Patriots fought, the Committees of Safety that ran a functioning shadow government before the first shot at Lexington, and the inverted force model that built a conventional army first and integrated guerrillas reluctantly. It examines the ideology of property-based liberty, the conspiracy theories that radicalized the colonial public, and the case study's central argument that the land campaigns staved off defeat while privateers, non-importation, and diplomacy delivered decision by attacking Parliament's commercial interests at sea. The episode closes with the study's most transferable finding: insurgency does not grow solely from deprivation. It also grows from shared success.

The Assessment of Men

The Assessment of Men: How the OSS Built America's First System for Selecting Spies and Saboteurs In late 1943, William Donovan's Office of Strategic Services was recruiting thousands of personnel for clandestine and irregular warfare work with no uniform screening process. The result was failures in the field that cost the organization time, money, blown operations, and in some cases the safety of entire networks. The Assessment of Men is the official 1948 report of the OSS Assessment Staff, the account of how a team of psychologists and psychiatrists under Henry A. Murray built the first systematic personnel selection program in American history designed around organismic, whole-person principles. This episode works through the program as the study itself lays it out. The borrowing from the British War Office Selection Boards and the German military psychologists who came before them. The country-estate setting of Station S forty minutes outside Washington, where candidates lived together for three days under constant observation. The leaderless group situations, the stress tests, the construction of cover stories that candidates had to defend under pressure. The central problem the staff faced, captured in their own definition of the work: the assessment of men is the scientific art of arriving at sufficient conclusions from insufficient data. We cover the conditions that made the OSS task unique among selection boards. The sheer variety and novelty of OSS missions, from saboteur to script writer to resistance leader to base operator. The absence of usable job descriptions when so many operations were still being planned or were unfolding behind enemy lines. The heterogeneity of the recruits, including foreigners and first-generation Americans recruited for the language and territory of their origin, and the cross-cultural judgment problems that followed. The impossibility of testing every special skill, from Morse code to demolitions to tropical medicine, and what the staff chose to measure instead. This is a foundational text. The assessment-center methodology pioneered here became the basis for personnel selection across the postwar American intelligence community and now runs throughout government and industry. For anyone studying how clandestine and special operations organizations decide who is fit to serve, this is the source code. Source document available for download at theresistancehub.com. Follow The Resistance Hub on Spotify so new episodes reach you the day they drop. Built for the defense and security community thinking past the next headline.

The OSS Secret Intelligence Field Manual

The OSS Secret Intelligence Field Manual: How America Built Its First Espionage Doctrine In March 1944, William Donovan's Office of Strategic Services codified the operational doctrine that would shape American human intelligence for generations. The Secret Intelligence Field Manual, Strategic Services (Provisional), classified Top Secret and held to deliberately limited distribution, set out the principles, methods, and organization of clandestine collection in enemy, enemy-occupied, and neutral territory. This episode unpacks the foundational tradecraft that the OSS taught its operatives and the agents they ran in the field. We walk through the doctrine as the manual itself lays it out: the function of the Secret Intelligence Branch and its source-reliability grading system (A through F for the source, 1 through 5 for the information). The discipline of cover and the four freedoms that define a workable legend: social, financial, movement, and leisure. The cell system of network construction, where compartmentation keeps any single capture from unraveling the whole. The handling of agents, the dangers of the agent provocateur, the calculated risk of the double agent, and the cold logic that the organization always outweighs the individual. Communications security, the assumption that every telephone is tapped and every room wired, and the rule that no one is told more than the job requires. This is the source code for resistance liaison, underground contact, public-opinion collection, and the intelligence-requirement taxonomy (military, naval, economic, political, psychological) that analysts still recognize today. Source document available for download at theresistancehub.com. Follow The Resistance Hub on Spotify for new episodes each week. This show serves analysts, planners, and defense and security professionals studying the craft of intelligence and irregular warfare.