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Why the P-51 Mustang Was the Best World War II Fighter

P-51 Mustang
P-51 Mustang. Image Credit: Creative Commons.

Nazi Germany Wasn’t Ready For the P-51 Mustang: During the Second World War, Nazi Germany faced many notable Allied fighters, and the Royal Air Force’s Spitfires and Hurricanes proved crucial during the Battle of Britain.

However, nothing really could have prepared the Nazi pilots for North American Aviation’s P-51 Mustang.

Perhaps as it was originally designed for the RAF, which had actually sought to purchase the Curtiss P-40, the Mustang didn’t actually seem to impress those in the United States Army Air Forces. Yet, thanks to the personal intervention of Gen. Hap Arnold, the USAAF retained 55 P-51s from the British contract. Most of those became F-6A photo-reconnaissance aircraft and equipped the first Mustang units, the 154th and 111th Observation Squadrons in North Africa in the spring of 1943.

The aircraft was noted for its excellent performance at lower altitudes, but the P-51A’s Allison engines severely limited performance at high altitude, above 15,000 feet. The Allison was actually a good engine, but USAAF relied heavily on turbosupercharging, a requirement that was impossible to meet for all aircraft due to a shortage of metal alloys such as tungsten.

As a result, the USAAF employed its P-51As in the China-Burma-India Theater, where most combat took place at low altitude.

Merlin Magic

It was in the fall of 1942 that the Mustang’s greatest event was truly achieved – thanks to a little magic from Rolls-Royce, namely its Merlin engine. A few of the aircraft were experimentally fitted with the British Merlin engines, and the results were immediate. One aircraft in the United States flew a remarkable 441 mph at 29,800 feet – about 100 mph faster than the P-51A at the same altitude.

It proved to be the perfect combination – the Mustang and the Merlin.

Mass production of the Merlin-powered P-51B and P-51C began – the only difference was that North American produced the “B” in Inglewood, Calif., while the “C” was built in Dallas, Texas.

In 1942, the USAAF had also ordered 300 attack/bomber A-36A Mustangs, fitted with the Allison engine. It was an attack version equipped with dive brakes and bomb racks, and it entered combat in June 1943, where it eventually served in North Africa, Italy and India.

The Nearly Unstoppable Mustang

In December 1943, the first P-51B/C Mustangs arrived in Europe with the USAAF’s 354th Fighter Group “Pioneers.” The aircraft were what was needed to escort the first U.S. heavy bombers in air raids over Berlin in March 1944. At that time, the USAAF fielded about 175 P-51B/C Mustangs.

Along with the USAAF’s P-38 Lightnings, those P-51s provided sorely needed long-range, high-altitude escort for the U.S. bombing campaign against Germany.

In the final year of the war, the Mustang excelled in hedge-hopping strafing runs over France as well as in long-range escort duty. The versatile fighter made a name for itself by blasting trains, ships and enemy installations in Western Europe.

It had been the first single-engine plane based in Britain to penetrate Germany, the first escort fighter to reach Berlin, and even the first to go with the heavy bombers over the Ploiesti oil fields in Romania. It was the first fighter to make a major-scale, all-fighter sweep specifically to hunt down the dwindling Luftwaffe.


P-51. Image Credit: Creative Commons.

One of the highest honors accorded to the Mustang was certainly its rating in 1944 by the Truman Senate War Investigating Committee, which described the P-51 as “the most aerodynamically perfect pursuit plane in existence.”

By the end of the Second World War, some 15,000 Mustangs of all types had been built.

Korean War and Beyond

After the end of the war, the P-51 remained in service with the newly-formed U.S. Air Force and was in service with many other nations around the world even as more advanced jet fighters relegated the Mustang to secondary status.

By the end of the decade, many of the Air Force’s Mustangs, then redesignated the F-51, were transferred to the Reserve and the Air National Guard (ANG), or sold as surplus.


P-51. Image Credit: Creative Commons.

Yet its story and service weren’t over.

At the start of the Korean War, the Mustang once again proved its usefulness. After the initial invasion, Air Force units were forced to fly out of bases in Japan, and the F-51 proved to have the range lacking in early jet fighters. Mustangs thus continued to see service in the conflict with the U.S. Air Force, South Korean Air Force (ROKAF), South African Air Force (SAAF) and Royal Australian Air Force (RAAF), where it was employed as a fighter-bomber and proved close support and interdiction missions, until it was finally replaced by F-86F jet fighter-bombers in 1953.

The Mustang remained in service with U.S. Air Force Reserve and ANG units until the aircraft were finally phased out in 1957.

Peter Suciu is a Michigan-based writer who has contributed to more than four dozen magazines, newspapers, and websites. He regularly writes about military small arms, and is the author of several books on military headgear including A Gallery of Military Headdress, which is available on Suciu is also a Contributing Writer for Forbes Magazine

Written By

Expert Biography: A Senior Editor for 1945, Peter Suciu is a Michigan-based writer who has contributed to more than four dozen magazines, newspapers, and websites with over 3,000 published pieces over a twenty-year career in journalism. He regularly writes about military hardware, firearms history, cybersecurity, and international affairs. Peter is also a Contributing Writer for Forbes. You can follow him on Twitter: @PeterSuciu.



  1. John jones

    December 14, 2021 at 8:32 pm

    Corsair was the best ww2 fighter

  2. Ferd Berfle

    December 15, 2021 at 1:08 am

    Supposedly Hermann Goering said that when he saw the P-51s flying over Berlin he knew the war was lost.

  3. Stanton George steed

    December 15, 2021 at 7:36 am

    If it was not for the Mustang long range fighters the war in Europe would have gone on for 10 more years.and and all the British cities in Britain would have been smashed the to rubble and the V1 and the V2 would have been launched in 1000 every day and night.and the V3 and V4 would be smashed the American cites and Russian city’s to rubble.

  4. Jpchiesa

    December 15, 2021 at 12:36 pm

    Mr Suciu wrote a compelling piece on why the P-51 should be considered the top WW-2 fighter, but I must disagree. But don’t use me to make the argument use one WW-2 veteran ace who flew both the P-51 and the Republic P-47 Thunderbolt, none other than General Chuck Yeager, of “The Right Stuff”. He stated in his own biography that the Mustang was a joy to fly. Fast, nimble and highly maneuverable, he said strictly flying, the Mustang was the best. But he said this was a fistfight in the air and in a fistfight you want a heavyweight. The P-47 Thunderbolt aka the “Jug” was just that type of fighter plane. Yes it was significantly heavier, but for justified reasons. Yeager said after being ganged up on by German Messerschmitt fighters and shot down while flying a Mustang and surviving, he switched to a jug, because, for one reason it surrounded the pilot in heavy armor! The jug also carried far more ordinance! For example the Mustang’s armament consisted of six 50-caliber machine guns carrying 400 rounds each. The Thunderbolt on the other hand packed eight 50-caliber Browning M-2’s, each with 480 rounds of ammunition in belts that were 27 feet in length, possibly the source of the term “The whole nine yards.”
    that’s 2,400 rounds in the Mustang versus 3,840 for the Jug!
    It’s bomb payload, according to one source was 3,000 pounds which was considerably more than a Mustang. Its 2,600-horsepower Pratt & Whitney allowed it to go 400 plus knots and Chuck Yeager claimed that in a dive attacking a German foe, actually broke the sound barrier, after hearing a sonic boom! Something that he officially did, becoming the first to break it in the Bell X-1. Finally he said that flying the Thunderbolt was quite comfortable and less fatiguing, a big plus on long sorties. I have to agree with the General!

  5. Endika

    December 15, 2021 at 1:02 pm

    No it wasn’t.
    The best fighter was between the spitfire and the Ms .109.

  6. Sveb

    December 15, 2021 at 1:59 pm

    Not often read such stupid comments. Also the article isn`t correct. The best piston engine fighter in ww2 was the focke wulf ta 152. The best jet fighter was the Messerschmitt me 262.
    That is whaz every Pilot after ww2 said which had flown the ta 152.

  7. Denis George Colomb Jr

    December 15, 2021 at 3:17 pm

    The best American fighter Was by far the P47 series of planes, with the N model being by far americas best fighter.

  8. Rafe

    December 15, 2021 at 5:00 pm

    This is such bullshit, everyone knows the P-40N-15 was the best fighter of WW2, the P-51-D5 was only good at high speeds and running back to the airfield.

  9. Leinadmix9

    December 15, 2021 at 5:03 pm

    The best WWII Fighter was the F4U-9

  10. Chris Berman

    December 15, 2021 at 8:51 pm

    The only counter to the P 51 was Germany’s ME 262 jet. The ME 262 was over 100 miles an hour faster, but they were too little too ate. And as for Germany continuing the war past 1945, good luck with that. We now had atomic bombs. So good thing they surrendered in May or we would have nuked them by August

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