@Loulong: Me !!! perhaps...
Well, I decided to stop this torment

I'll give the answers NOW:
1) Battle "without tears" (or tearless): when, who, winner.
367 BC, in Arcadia (central Peloponnesos,Greece); Spartans against Arcades; Spartans won with no casualties (!!!), that's why was called "without tears"...
2) Who was the general leading Romans at siege of Masada?
Flavius Silva, commander of Legio X "Fretensis".
3) Battle "of Elephant": when, who, winner.
570 AD, in Arabia; Axum (Ethiopian kingdom, invader) against Arabs; Arabs won.
This battle ended the Ethiopian attempt to invade Arabia (Arabs were helped by Persians), and was called so 'cause there was an elephant in Axum army. The important fact related was that 'prophet' Muhammad (570ca - 632) was born in that significative( arab important victory) year...
4) Who was muslim general who "lost his drum" at battle of Calatañazor ?
al-Mansur (called "Almanzor" by Spanish), great muslim chief who led a lot of succesful campaigns against Christian Spanish kingdoms (he plunder Santiago de Compostela, and many other cities) and began the 'amirì' dinasty. He died after the battle. About the battle of Calatañazor (1002 AD) there are historical doubts...
5) Which song William's Norman troops were singing at Hastings ?
They sang pieces of the "Chanson de Roland" (song of Roland), the famous epic poem about Charlemagne's paladin dead at Roncesvalles.
6) Who was the king called "Oc et no" ("yes and no") by the poet-knight Bertrand de Born ?
Richard I "Coeurdelion" ("Lionhearted"). And Bertrand was a friend of his, too...
The 'surname' was related to Richard's frequent changes of mind (sometimes bloodily...).
7) Which was the last Cathars' fortress to be conquered and when?
I know, Montségur (1244) is the most famous... but...
the last Cathar fortress to be catched was QUERIBUS, in 1255. Its lord was Chabert de Barbaira.
Officially the great war against Languedoc Cathars ended with Treaty of Paris (1229): Montségur and Quéribus were quite isolated episodes.
8) Who was the material writer of the "Milione", whose author was Marco Polo ?
Rustichello da Pisa, who divided the prison cell with Marco Polo at Genova (Polo was captured by Genoans at battle of Curzola, 1298; Rustichello, IIRC, at Meloria,1284...).
(I'm wondering if MarcoPolo wasn't capable of writing...

Maybe he was wounded...)
9) Who was the British general called "Reverse" and why?
Sir Redvers H. Buller (1857-1915): he was defeated at Colenso (1899), and had to leave Ladysmith to enemies during the Boer war... His 'surname' was related to his incapability and inclination to retire (in wrong moments, too)...
10) Why the Chinese rebels in 1899-1901 were called "Boxers" ?
Cause the name of secret society "League of justice and harmony" was wrongly translated from Chinese in "Fists of justice and harmony".