Let's NOT play darts! The tiny skull-piercing arrow bombs dropped by WWI biplanes onto German trenches which disgusted British pilots as they were 'ungentlemanly'

5-inch darts - regarded as Britain's first bomb - were dropped in batches of 500 from biplanes over enemy trenches

One of the 'flechettes' is expected to reach £100 at auction

It belonged to Harry Harse, an engineer stationed in France with RFC Squadron 12 in 1916

31 years after they were first launched, US dropped atomic bombs on Japan

The five-inch darts (Pfeile in German) were dropped in batches of 500 from WWI biplanes flying over enemy trenches to devastating effect

For the Germans in the trenches of World War One, the cry of 'Pfeile'! ('Arrows') would fill their troops with dread.

It meant hundreds of tiny darts were going to drop on them, capable of piercing both helmet and skull.



Now, one such missile - regarded as Britain’s first bomb - has emerged for sale.



The five-inch darts were dropped in batches of 500 from biplanes flying over enemy trenches to devastating effect.



They were capable of inflicting horrendous wounds - but upstanding British pilots viewed their use as underhand and eventually refused to use them.

British War magazine, The War Illustrated, noted at the time the Royal Flying Corps’ aversion to using the projectiles, called flechettes.



One edition stated: 'Our aviators think arrow-dropping dirty work - because the enemy cannot hear the things coming, and because they make such nasty wounds.



'Also it was not possible to drop them with sufficient accuracy.'



Charles Grey, editor of The Aeroplane magazine, wrote in a 1915 edition: 'A friend of mine was at the military aerodrome when some of these arrows were being tested, with an unfortunate cow as the enemy.

'About three arrows struck the cow, and went clean through her into the ground, after which the cow died quite suddenly.'



The rudimentary devices were superseded by darts with exploding tips and then full-scale bombs.



Just 31 years after the flechettes were first launched from planes on enemy targets, the Americans dropped two devastating atomic bombs on Japan.



The flechette for sale is among the personal belongings of Harry Harse, an engineer stationed in France with RFC Squadron 12 in 1916.

Known as flechettes, the one for sale is among the personal belongings of Harry Harse (above), an engineer stationed in France with RFC Squadron 12 in 1916



Although deadly, they were much sought-after battlefield mementos among troops.

It is expected to fetch £100 when it goes under the hammer at Onslows auction house in Blandford, Dorset, on behalf of relatives of Mr Harse who live in Reigate, Surrey.

Patrick Bogue, auctioneer, said: 'Harry Harse was a precision engineer who enlisted voluntarily at the outbreak of war and was involved in the manufacture of flechettes.



'The flechettes were packed into boxes which had a special release system on it.

'The flechettes were packed into boxes which had a special release system on it. The pilot would fly over enemy trenches and pull a string to release them, 500 at a time, over German troops. But they weren't very accurate and they certainly weren't very British,' said auctioneer Patrick Bogue. Above, a British WWI biplane

'The pilot would then fly over enemy trenches and pull a string to release the darts, 500 at a time, over the German troops below.



'The darts weren't very accurate and they certainly weren't very B ritish' - auctioneer Patrick Bogue



'But they weren’t very accurate and they certainly weren’t very British - in fact the British pilots didn’t like using them at all.



'It was only when the Germans began using ungentlemanly methods of warfare that they became more accepted.



'Aircraft had only just started to be used in warfare and these darts were effectively the precursor to bombs.



'It’s incredible to think that in just 30 years it went from dropping rudimentary metal darts to dropping the atom bomb.'



The auction will take place on July 9.