It seems that Marius or someone later introduced the breakable wooden pins to the latter day pila, and the earlier Republican heavy and light pila didn't have the wooden pins because they were made differently than the latter day pila.
It seems that the Marian style latter pilum was adapted because it was too hard to temper the metal shaft properly so that it still had enough strength to penetrate before it bent, and they all didn't bend anyway due to this difficulty. Sometimes the opposing armies formed up fairly close to one another, and if you are in pilum range then you could expect to be at close quarters with the Legionaires very quickly, so you wouldn't have that much time to pick up a pilum and throw it back at the Romans because after they threw their pilums from a close range the Romans usually advanced to close quarters very quickly. Plus, if a lot of your close order troops were bothering about picking up pilums in order to throw them back at the Romans, that could disorder your close combat formation. There is at least one account of the Gauls doing this, maybe at Telamon, so it was done, but not always.
Here is info on the Auxillia Infantry shield types:
See shield numbers 8 (Auxillia raised from Roman citizens), and 30 (non-citizen Auxillia), both are rectangular, not oval, although this as you know is a rarity. Also, it would be good to check the latter Notitia Dignitatum, just in case.
http://www.redrampant.com/roma/auxshields.html
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http://www.esg.ndirect.co.uk/Gentlemen.htm
12th or 13th paragraph down tells of the Auxillia on Trajan's Column with a rectangular Legionary shield, but this is generally regarded as an error of the sculptors, since TJ's Colmn has other 'oddities' on it.
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Here are main Google search pages for 'Auxilia using rectangular Legionary shields' and 'Auxilia shields', respectively:
http://tinyurl.com/fmwgj
http://tinyurl.com/gnrjj
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Finds at Hadrian's Wall may indicate some Auxillia wore Legionary equipment, although whether this is referring to new or older passed-down equipment I don't know off-hand.
http://www.geocities.com/dbplastic/plastic/escaxs.html
Would have to go from this wargamer's site to Google again.
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A conversation from this site,
http://tinyurl.com/obrnj :
Actually, it may have been a little more complicated than that.
A few examples:
-Gnaeus Musius (Legio XIIII aquilifer) - oval scutum.
-M. Flavoleius Cordus (Legio XIIII) - oval scutum
**-Annaius Daverzus (Cohors IIII Dalmatarum) - rectangular shield
-C. Castricius Victor (Legio II Adiutrix) - oval scutum
-C. Valerius Secundus (Legio XIIII signifer) - oval shield
-Q. Luccius Faustus (Legio XIIII signifer) - oval shield
-Mainz column bases - four scuta are shown - at least three appear to be intended to show scuta with curving or even pointed top and bottom edges. Of these three two appear to be straight sided and one may have slightly curved sides. The fourth scutum may be rectangular or it may too be intended to represent a shield with straight edges and curving top and bottom edges.
-Mainz column base - one oval shield is shown which appears to be intended to be flat. The soldier carrying it is generally identified as an auxiliary.
-Adamklissi metopes - several legionaries appear to be equipped with shields with curving top and bottom edges and straight(ish) sides.
-Adamklissi metopes - axilia are equipped with flat oval shields.
-A roman shield found in Doncaster was flat (suggesting an auxiliary unit) and had parallel straight sides and slightly curving top and bottom edges.
**-Three THIRD CENTURY scuta from Dura were originally rectangular and curving. Most modern reconstructions of early imperial shields are based on these.
-Other third century shields from Dura are flat and oval.
**-Trajan's column makes a (perhaps formulaic) distinction between rectangular curved legionary shields and oval flat auxiliary shields.
I hope this helps
Crispvs
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Miniatures AtlasHispanic Auxilia with rectangular shield (EIR08) ... Built using recycled Roman Bricks and Arches and given A Lozenge Slate Roof. this example of Romanesque ...
www.miniaturesatlas.com/ cat/scale25mm/nationalityrome/all.htm - 81k - Supplemental Result - Cached - Similar pages
[ More results from
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http://p200.ezboard.com/fromanarmytalkf ... =278.topic
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Enjoy,Magobarca