War on the Rocks is built around one-on-one interviews conducted by founder and host Ryan Evans, with occasional multi-guest panel episodes. The most frequently recurring subject in the sampled episodes is the war in Ukraine, tracked through repeat appearances by Michael (Mike) Kaufman of the Carnegie Endowment, who reports on front-line conditions, troop density, mobilization shortfalls, and drone and missile warfare after periodic research trips to the country. Other episodes go deep on defense institutions and doctrine, such as a four-person panel of Marine Corps marksmanship instructors from Quantico's Weapons Training Battalion describing the SPEAR lethality framework, or a two-host discussion by Mark and Tom on Canada's fragmented intelligence enterprise featuring retired Brigadier General Jim Cox. Guests come primarily from defense think tanks, military units, retired officers, and intelligence practitioners rather than journalists or pundits. Episodes mix granular battlefield reporting, such as drone attrition rates and interceptor shortages, with broader institutional questions like intelligence oversight and doctrine reform. The show also functions as a network hub, referencing affiliate and members-only spinoff podcasts (Broken Mirrors, The Russian Contingency, Airman Pulse, Marine Pulse) within main-feed episodes. Production is conversational and unscripted, closer in tone to a research briefing than a produced narrative show. Episode length varies widely, from roughly 20-minute battlefield updates to 100-minute institutional deep dives. Episodes assume listener familiarity with military and foreign-policy terminology, such as echelon defense, drawdown authority, and force generation. It is best suited to people following the Ukraine war closely, current or former military and intelligence professionals, and policy-adjacent listeners rather than a general audience.