Identifying military transports: telling the A400M, C-130, C-17, C-390 and An-124 apart with confidence

A gray high-wing aircraft comes in on approach over the trees, the rear fuselage swept steeply upward, the landing gear fairings thick as saddlebags. One thing is clear right away: a military transport. But which one? At first glance the types look astonishingly alike, because they all have the same job – loading and unloading heavy cargo over a ramp, even on short and unpaved strips. The good news: identifying military transports works with three questions. This guide shows you how to reliably tell the Airbus A400M, the C-130 Hercules, the C-17 Globemaster III, the Embraer C-390 and the Antonov An-124 apart.

Identifying military transports: the short answer

Ask first about propulsion: propeller or jet? Then about the tail: does the horizontal stabilizer sit on top of the fin (T-tail) or low on the fuselage? Finally about size and number of engines. Four propellers plus a T-tail gives you the A400M, four propellers plus a classic tail the C-130. Two jets under the high wing are the C-390, four jets with a T-tail and winglets the C-17, four jets without winglets with a low-set horizontal stabilizer and a gigantic fuselage the An-124.

What all transports have in common

Before you look for differences, it helps to know why the types resemble each other so much. A military transport has to load and unload vehicles, pallets or paratroopers as easily as possible. Almost inevitably, the same design follows:

• High wing: The wing sits on top of the fuselage. That keeps the cargo hold clear, and the engines hang high enough above gravel and grass.
• Upswept rear fuselage with ramp: Vehicles roll straight in, and loads can be dropped in flight.
• Landing gear in side fairings: The aircraft sits low, the ramp lies flat on the ground, and the fuselage needs no wheel well in the cargo hold.

These features therefore only tell you that you have a transport in front of you – not which one. How to identify civil types in general is explained in the guide Recognizing aircraft types for beginners. For military transports, engines and tail are what matter most.

Airbus A400M Atlas: Europe’s big turboprop

The Airbus A400M is the transport you see most often in Germany. It first flew in December 2009 in Seville, where Airbus also does final assembly. With up to 37 tonnes of payload, it closes the gap between tactical turboprops and large jet transports. The Luftwaffe is the largest operator: according to the Bundeswehr, all 53 aircraft ordered have been accepted, the last landing in April 2026 at Airlift Wing 62 (Lufttransportgeschwader 62) in Wunstorf.

How to recognize it:

• Four large turboprops under the high wing.
• Eight propeller blades, swept like scimitars. Eight-blade propellers do exist on some modernized C-130Hs, but there with a classic tail.
• Counter-rotating propellers: On each wing, the two propellers turn in opposite directions. You can see this well on the ground at slow rotation.
• T-tail on a very tall fin.
• Size: a good 45 meters long – noticeably bigger than any Hercules.

Other A400M operators in Europe include France, Spain, the United Kingdom and Turkey; Belgium and Luxembourg fly their aircraft together from Melsbroek near Brussels. Where to best see the German aircraft is described in the guide to Wunstorf air base.

Lockheed C-130 Hercules: the evergreen

The C-130 Hercules first flew in 1954 and is still built by Lockheed Martin in Marietta. With more than 2,700 built, it is the transport you are most likely to encounter worldwide. In Germany, the Luftwaffe flies the C-130J-30 and KC-130J, stationed in a German-French squadron at Évreux in France. The US Air Force has C-130Js at Ramstein Air Base.

How to recognize it:

• Four turboprops under a straight, unswept high wing.
• Classic tail: The horizontal stabilizer sits low at the end of the fuselage, not on top of the fin. That is the quickest difference from the A400M.
• Count the propeller blades: four wide blades on the classic Hercules (such as the C-130H), six scimitar-shaped ones on the modern C-130J Super Hercules. Exception: some modernized C-130Hs, in the US for example, carry eight-blade propellers.
• Short, bulbous fuselage just under 30 meters long. The stretched C-130J-30 is about 4.6 meters longer.

Mix-up risk: The civil L-100 Hercules looks almost identical but wears airline colors and civil registrations. Historically, the Transall C-160 also belongs in this class – but it has only two turboprops and flew in Germany until 2021. Smaller relatives with two propellers and a T-tail, like the Leonardo C-27J Spartan, you recognize by their smaller size.

Boeing C-17 Globemaster III: the strategic jet

The C-17 Globemaster III is the US Air Force’s big jet transport. It was developed at McDonnell Douglas; after the 1997 merger, the program continued under Boeing. The first flight was in 1991, and the 279th and last aircraft was delivered in November 2015. The C-17 carries about 77.5 tonnes – more than twice as much as the A400M – and still lands on short runways. The development history is covered in more depth on the page McDonnell Douglas/Boeing C-17.

How to recognize it:

• Four jet engines in individual nacelles under a swept high wing.
• Winglets at the wingtips – a rare feature on large military transports.
• T-tail on a very tall fin, with the wide rear ramp below.
• Short, powerful fuselage in proportion to the wingspan of a good 50 meters.

In Europe, there are two dedicated C-17 fleets: eight Royal Air Force aircraft at Brize Norton and three aircraft of the multinational Heavy Airlift Wing in Pápa, Hungary. The latter carry the serials SAC 01 to SAC 03 and Hungarian national insignia. In Germany, you mostly see US Air Force aircraft, often around Ramstein.

Mix-up risk: The Lockheed C-5 Galaxy also has four jets and a T-tail but is clearly bigger and has no winglets. The Ilyushin Il-76 is also a four-engine high-wing aircraft with a T-tail; you recognize it by the glazed navigator’s station under the cockpit.

Embraer C-390 Millennium: two jets, compact dimensions

The Embraer C-390 Millennium is the up-and-comer among transports. The Brazilian manufacturer Embraer flew the prototype for the first time in February 2015, and the type has been in service with the Brazilian Air Force since 2019. With up to 26 tonnes of payload, the C-390 sits between the Hercules and A400M but, thanks to jet propulsion, flies faster than both. In Europe, Portugal, Hungary and the Czech Republic already fly the type; the Netherlands, Austria and Sweden have ordered it.

How to recognize it:

• Two turbofan engines under the high wing – not a single propeller. They are IAE V2500s, which you know from the A320ceo family.
• T-tail like the A400M.
• Slightly drooping wings seen from the front.
• Compact size: about 35 meters in length and wingspan.
• On the KC-390 tanker version, two refueling pods hang under the outer wings.

Even the sound helps: instead of the deep propeller drone of a Hercules, you hear a steady jet roar. Two jets under a high wing with a rear ramp are so rare in military transport that you’re almost always right with this combination.

Antonov An-124 Ruslan: the heavy-lift giant

The Antonov An-124 was developed as a Soviet military transport, first flew in late 1982 and was then the heaviest aircraft in the world. A good 50 were built. Today you see it in Europe mainly in charter work for oversized cargo: turbines, helicopters, industrial plants, but also military equipment. The Ukrainian Antonov Airlines has had its main base at Leipzig/Halle Airport since 2022. Russian aircraft, such as those of Volga-Dnepr, have largely disappeared from Western airspace because of sanctions.

How to recognize it:

• High wing with clearly drooping wings – the typical “crouching” silhouette.
• Four large turbofans, no winglets.
• Horizontal stabilizer low on the fuselage – no T-tail like the C-17, C-5 or Il-76.
• Huge dimensions: about 69 meters long, 73.3 meters wingspan.
• Hinged-up nose and rear ramp, plus 24 wheels under the belly.

Mix-up risk: The one and only An-225 had six engines and a twin vertical tail. It was destroyed near Kyiv in February 2022 – so a big Antonov jet in the sky today is always an An-124. You can read more about other heavy-lift freighters in the guide Recognizing cargo aircraft.

All five transports compared directly

Feature	A400M	C-130	C-17	C-390	An-124
Propulsion	4 turboprops	4 turboprops	4 jets	2 jets	4 jets
Propeller blades	8, scimitar-shaped	4 (old) or 6 (C-130J)	–	–	–
Tail	T-tail	classic	T-tail	T-tail	classic
Winglets	no	no	yes	no	no
Max. payload	37 t	about 19–20 t	about 77.5 t	26 t	120–150 t
Typical location in Germany	Wunstorf	Around Ramstein	Around Ramstein	rare, air shows	Leipzig/Halle
Status October 2026	in production	in production	production ended 2015	in production	production ended

For step 4, the guides to Serials of Bundeswehr aircraft and to US military serials help. How rare a particular aircraft is at your spot, you can estimate with the article How rare is my sighting?.

Where and when you see military transports

Transports rarely fly to a fixed schedule. Missions, exercises and relocations determine when they show up where. A few basic rules still improve your chances markedly:

• Know the home bases: For the A400M, Wunstorf near Hanover is the first address. You catch the An-124 most reliably at Leipzig/Halle, for example from the Leipzig/Halle observation deck. Background on the airport is in the Leipzig/Halle spotting guide.
• Keep an eye on US bases: Around Ramstein, US Air Force C-130Js and C-17s are far more likely than at civilian airports.
• Civilian airports with a military section: At airports like Cologne Bonn, too, transports land regularly, for example on government or relief flights.
• Use live tracking: Many transports transmit ADS-B data, though not always with an identifier. How to find them is explained in the guide Tracking military aircraft online.
• Air shows and open days: At Bundeswehr Day or the Royal International Air Tattoo, transports are often in the static display – ideal for studying details like propellers and landing gear up close.

Related military types you shouldn’t confuse

Not every gray widebody jet is a transport. Tankers like the Airbus A330 MRTT or the KC-46 are based on airliners and are low-wing aircraft – more in the guide Recognizing tanker aircraft. Early warning and reconnaissance aircraft carry radomes and antennas; how to identify them is shown in the guide Recognizing AWACS and reconnaissance aircraft. The A400M can itself work as a tanker, by the way: with hose pods under the wings, it supplies fighter jets and helicopters in the air.

Conclusion

Military transports share a basic shape – high wing, rear ramp, low-slung landing gear – but differ clearly in propulsion, tail and size. Four propellers with a T-tail are the A400M, four propellers with a classic tail the Hercules. Among the jets, engine count, winglets and tail reliably separate the C-390, C-17 and An-124. In Germany, you meet the A400M most often, the C-17 and C-130J mainly around Ramstein and the An-124 at Leipzig/Halle.