Just a recap of the development of the sabre from current notes:
"...the very long, curved, narrow battle axe of Middle Kingdom Egypt (1990-1798 BC) may have been the prototype for the curved swords which the popular imagination always associates with Islam. Curved bronze swords had been in use for at least two millennia before Islam ".
"Swords of Islam" by Anthony North
in "Swords & Hilt Weapons (ed.M.Coe,
N.Y.1989), p.137
"...our knowledge of the sword of the Avars has recently been augmented by a new reconstruction of the Pereshchepina sword, which shows that it had a long straight blade and a ring pommeled hilt with vestigial quillons".
"China and Central Asia"
by Thom Richardson
(Coe, ibid.p.176)
"...the curved cavalry sword , however, probably originated in Turkestan. Perhaps the earliest representation of such a weapon appears in a frescoe from Sorcuq, usually assumed to date from the 8th century, examples excavated from graves can be dated from the 9th, 10th and 11th centuries".
Richardson (op.cit.p.176)
Richardson states further, "...the curved sword was not diagnostic of a different method of warfare, nor did it oust the straight, single edged sword in Central Asia".
On p.180 he states: "...in all likelihood, the curved sword was introduced by the Uighurs. This Turkish people, originally Manicheans, were converted to Buddhism in the mid 9th century and established a kingdom centred on Turfan and Kucha. Earliest examples of these curved swords belong to Khirghiz finds of the 10th century".
* it is noted that the frescoe which represents an event of 8th c. probably was painted much later, possibly 300 years.
This data illustrates the rather sketchy speculation on the development of the sabre as a weapon form, however it does seem to clarify that the Avars seem to have used straight blade swords. This seems likely as they are thought to have actually been the Ruan-Ruan who were driven from Mongolian regions c.550 AD and thier ring hilt swords were of probably influenced by the huanshoe dao ring pommel straight swords of Han empire China.
The Alano-Magyar sabres previously discussed from northern Caucasian regions and shown in Lebedynsky ("Les Armes Traditionelles de l'Europe Centrale" ,p.18) also include the familiar 'sword of Charlemagne' which is a sabre of 9th c. slight curved blade and extended yelman.
In "The Lore of Arms" (William Reid, 1976) it is stated, "...curved swords were common in Eastern Europe in the Middle Ages, but in the west the medieval form known is the falchion".
The falchion seems to have been essentially a straight back sword with a widened and bellied blade for slashing as the sabre.
At this point, while both heavy straight swords were in use, along with variations of sabres, it would seem that primary development of curving blades was taking place in the Islamic sphere. In "Polish Sabres: Their Origins and Evolution" by Jan Ostrowski ("Art, Arms and Armour" ed. Robert Held, Vol.I, 1979-80, p.222), it is stated, "...the first examples to find thier way to Poland might have been imported Turkish products, or Hungarian ones patterned on Turkish model, and thier appearance in large numbers should be dated from the beginning of the 16th century.In 1505, the municipal council of Cracow granted swordmakers the right to mount and furbish sabres".
OK, I didn't say a 'brief' recap
!!
I just wanted to add some references that might help in our discussion on development of the sabre. It seems to me that the sabre has existed in varied forms concurrent with other forms of sword, and the more curved and parabolic forms of sabre gained popularity as noted from about 16th c. onward. It also seems generally held that the cavalry tactics and use of the sabre evolved in Eastern Europe influenced by Turkish horsemen and likely others from Balkan regions.
Best regards,
Jim