The first function aircraft were put to in WWI was reconnaissance. In 1914, that might mean locating the enemy in a fast-moving battlefield, but as soon as the trench stalemate set in, reconnaissance mostly meant identifying enemy buildups along the line and – still more importantly – serving as spotters for artillery. It wasn’t a huge cognitive leap to go from having aircraft which identified targets for the artillery to thinking that the aircraft could be the artillery. But as with tanks, the technical limitations of the platforms in use meant that actually meaningful close air support was still two decades away when the war ended. The rapid development of aircraft in these early days means that there is a truly bewildering array of aircraft designs in use during the war, but the Farman F.50 is a good sample for what the most advanced bombers in common use looked like towards the war’s end. It carried a maximum of eight 44kg (totalling 352kg) bombs under the wings, which were dropped unguided. With a maximum speed of less than 100mph and a service ceiling under 5000m, it was also an extremely vulnerable platform: fragile, slow and with a relatively low flight ceiling. The French mainly used bombers at night for this reason.
But how much airpower does it take to really move a division out of position? In 1944, at the start of Operation Cobra as part of the Normandy breakout, it was necessary for US forces to move the powerful armored division Panzer Lehr out of its prepared positions outside of St. Lo. Over the course of an hour and a half, the U.S. Eighth Air Force hit Panzer Lehr with approximately three thousand aircraft, including 1,800 heavy bombers (each of which might have had bomb-loads of c. 2-3,500kg; the attack would have been the equivalent of about 13,000 Farman F.50s (of which only a hundred or so were built!)). By this point, even medium bombers carried bomb loads in the thousands of pounds, like the B-25 Mitchell medium bomber, with a bomb load of 3000lbs (1360kg). This was followed by a hurricane artillery barrage! Despite this almost absurdly awesome amount of firepower (which, to be clear, inflicted tremendous damage; by the end of Operation Cobra, Panzer Lehr – the heaviest and most powerful Panzer division in the west – had effectively ceased to exist), Panzer Lehr, badly weakened was still very capable of resisting and had to be pushed out of position by ground attack over the next three days.
Needless to say, nothing on offer in 1918 or for a decade or more after, was prepared to offer that kind of offensive potential from the air. That kind of assault would have required many thousands of aircraft with capabilities far exceeding what even the best late-war WWI bombers could do. Once again, while close air support doctrine was developed with one eye on the trench stalemate and the role airpower could play in facilitating a breakthrough and restoring maneuver (either by blasting the breakthrough or – as in Soviet Deep Battle doctrine – engaging enemy rear echelon units to bog down reinforcements). But the technology wasn’t anywhere near the decisive point by 1918. Instead, the most important thing aircraft could do was spot for the artillery, which is mostly what aircraft continued to do, even in late 1918.
Bret Devereaux, “Collections: No Man’s Land, Part II: Breaking the Stalemate”, A Collection of Unmitigated Pedantry, 2021-09-24.
May 28, 2022
QotD: Breaking the trench stalemate with tactical air power
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