I guess it's a facing on a uniform for soldiers, since the word armatura means an armor.

I may be completely off track, but I imagine the armor is chain maille. I have foun this link with an image of what I'm referring too. http://penelope.uchicago.edu/Thayer/E/Gazetteer/Places/Europ...

http://dellamoda.it/dizionario_della_moda/f/fiammato.php
Fiammato
(o flambé) La fiammatura è un ingrossamento irregolare, a forma di siluro, che si forma per difetto tecnico sul filato. Sfruttando ad hoc tale difetto si creano filati fiammati, che presentano ingrossamenti a intervalli voluti, con cui si producono tessuti come lo shantung o capi fantasia in maglieria. Si dicono fiammati anche quei tessuti che presentano bottoni e strisce di colori vivaci, specie con ingrossamenti assai marcati.

http://www.fibrecrafts.com/resource/fact_file/yarns/yarn_bas...
They include 5 types of worsted spun wool yarn and 5 types of woollen spun wool yarn plus the interesting Flamme wool yarn which combines one ply of thick and one ply of thin.
http://www.textilelive.com/search/newest-first/Page-14-30.ht...
Products: Openend 100 % carded cotton yarns (Ne 5/1 to Ne 40/1), openend cotton slub (flamme) yarns (Ne 5/1 to Ne 20/1), cotton knitted fabrics, ripple terry

slub-A soft thick nub in yarn that is either an imperfection or purposely set for a desired effect

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http://www.globaltextiles.com/html/images/upload/tradeleads/...
http://www.freepatentsonline.com/3841078.html
Slub yarns are yarns of variable denier which are useful for providing special texture to fabrics. The frequent changes in denier along the length of the yarn provide a raised surface in finished fabric which is quite obvious and pleasing to the viewer. This effect is well recognized, for example, in linen fabrics.

The terms "slub" and "nep" have been used in the prior art to describe an agglomeration of entangled fibers which provide segments along the length of the yarn with increased diameter. Often the term "nep" has been associated with an undesirable agglomeration along the yarn. On the other hand, the term "slub" is usually applied to a desirable agglomeration. The art of making slub yarns from natural fibers has been practiced for hundreds of years, and more recently processes have been developed for preparing slub yarns from continuous multifilament synthetic yarns.

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http://www.filatimaclodio.it/IT/on-demand/13
SLUB YARNS
La collezione dei Fiammati si arricchisce di nuove proposte. La fiammatura è riproducibile su ogni materiale. Appositi software permettono di realizzare a campione qualsiasi effetto. Il book offre una selezione di filati, lasciando ai propri interlocutori la possibilità di sperimentare nuove soluzioni creative.

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Da quello che vedo, i tessuti fiammati sono i "slub yarns", quindi, penso che il termine giusto per "fiamma" sia "slub"...

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http://plastics.2456.com/eng/epub/n_details.asp?epubiid=4&id...

http://www.encyclopedia.com/topic/yarn.aspx
In slub yarns areas are left untwisted to vary the diameter for ornamental effects.

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http://www.uster.cn/Uploads/ITM_February2007_(English).pdf

http://www.uster.com/UI/textile-Fancy-Yarn-Profile-2-3034.as...

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http://www.verymerryseamstress.com/fabrics.htm
Dupioni silks - an affordable alternative to more expensive silks. Dupioni is also known as "slub" silk. The slubs in the fabric are *not* imperfections, this is the way dupioni is made and slubs are normal.

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http://www.google.it/search?hl=it&q="fabric with slubs"&btnG...

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http://money.cnn.com/magazines/fortune/fortune_archive/2001/...
When denim was just a sturdy cloth for workmen, it came with "slubs," or irregular puffy swellings in the cotton fiber, until improvements in spinning eliminated them. Now slubs are back in fashion, so the electronic controls in new plants pulse the flow of raw cotton into the spinning machines to produce the imperfections designers want.