The capacity to move forces and materiel at strategic distance and sustain the bridge, by air, sea and land.
The Capability Development Index tracks the events that move a capability — operational use, technical breakthroughs, procurement decisions and the industrial base behind them — and places each on the record with the date it happened.
Recent developments cover the current period. Historical developments are the inflection points that produced Strategic Lift & Mobility as it stands today.
A hose passed by hand between aircraft flying in close formation proved that one aircraft could extend another's endurance in flight, a demonstration that took decades to mature into routine tanker operations but established the basic principle still used today.
Flying unpressurised aircraft over some of the world's highest terrain in severe weather, the route became the highest-volume airlift attempted up to that time and kept Chinese forces supplied for the rest of the war at a heavy cost in aircraft and crews.
American and British aircraft landed at Berlin's airfields at a rate of roughly one every few minutes at the operation's peak, defeating a Soviet land blockade without a shot fired and establishing airlift as a tool of Cold War statecraft.
Rugged, able to use short and unpaved runways, and continuously updated over seven decades, the design was still in production and in front-line service with dozens of air forces long after most contemporaries had been retired.
Matching tanker speed to the new generation of jet bombers and fighters ended a mismatch that had limited refuelling with older piston-engined tankers, and variants of the aircraft remained in frontline US service for the rest of the century and beyond.
US Air Force C-5s and C-141s delivered replacement aircraft, munitions and equipment directly into a live conflict, demonstrating that a strategic airlift decision made in Washington could shift the material balance of a war within days.
The raid combined long-range tactical airlift, in-flight planning and a night landing on unlit runways to insert and extract a rescue force far beyond Israel's borders, becoming a reference case for the reach that airlift gives special operations.
Its unmatched cargo volume made it the aircraft of choice for outsize industrial and military loads, and chartered An-124s became a standard part of global heavy-lift logistics for cargo too large for any Western freighter to carry.
After occupying the glacier ahead of Pakistan, India faced the task of supplying posts above 6,000 metres where no roads could reach, making the sector the longest-running example of a garrison kept alive by air mobility alone.
Built to ferry the Soviet space shuttle programme's orbiter and boosters, the six-engine giant later found a commercial role hauling outsize cargo worldwide; the only completed airframe was destroyed on the ground near Kyiv in the early days of Russia's 2022 invasion.
Military transport aircraft from several countries delivered search-and-rescue teams, field hospitals and aid within days of the quake that struck the Mandalay region, illustrating airlift as a fast-response tool independent of a country's own alliance network.
Austria and the Netherlands moved ahead with orders or transfers of the Brazilian-built tanker-transport, building on earlier sales to Portugal and Hungary and establishing Embraer as a credible alternative to established European and American airlifters.
A procurement process for a small fleet of Airbus multi-role tanker aircraft moved forward after years of delay, aimed at closing a persistent gap in the Indian Air Force's ability to extend fighter range and endurance.
Fighting and bureaucratic obstruction limited overland convoys into Sudan, pushing the United Nations and humanitarian partners toward costlier air deliveries to reach famine-affected areas, a stopgap that could carry only a fraction of what road transport would move.
The improved camera and display system, meant to correct years of refuelling boom control problems, moved through testing toward wider fielding, a step the US Air Force had treated as a condition for full confidence in the aircraft.
Growing numbers of domestically built airlifters and tankers reduced the People's Liberation Army's long-standing reliance on ageing Russian-made Il-76 aircraft, extending its capacity for long-range troop movement and mid-air refuelling of fighter and bomber fleets.
The Tata Advanced Systems facility, built with Airbus, was set to produce most of a 56-aircraft order to replace the Indian Air Force's Avro fleet and to become India's first private-sector military aircraft assembly line.
The newer aircraft began replacing a fleet of ageing C-130Bs and Ts that had suffered repeated accidents and low availability, restoring a more reliable heavy airlift capability for an archipelagic country dependent on air transport for disaster response.
The Eindhoven-based multinational unit, which lets smaller air forces buy shared access to aerial refuelling and strategic airlift rather than each building a national fleet, added member nations and additional Airbus A330 aircraft to its pool.
The order for European-built airlifter-tankers gave Indonesia a heavy strategic lift and refuelling capability well beyond its existing Hercules fleet, part of a wider modernisation of its air force's transport and logistics arm.