Summarize the use of the pilum in the battle of Pharsalus

In 48 BC, Pompey the Great attempted to use it against Julius Caesar at the Battle of Pharsalus, in what was to be the decisive battle of the Great Roman Civil War. Caesar countered this by ambushing Pompey's "hammer" element with a hidden fourth line of infantry;[5] Pompey's infantry was to be the anvil while his cavalry 'hammer' encircled Caesar's left flank. There was significant distance between the two armies, according to Caesar.[6]
As the infantry of Caesar advanced, Pompey ordered his men not to charge, but to wait until Caesar's legions came into close quarters; Pompey's adviser Gaius Triarius believed that Caesar's infantry would be fatigued and fall into disorder if they were forced to cover twice the expected distance of a battle march. Also, stationary troops were expected to be able to defend better against pila throws.[7] Seeing that Pompey's army was not advancing, Caesar's infantry under Mark Antony and Gnaeus Domitius Calvinus started the advance. As Caesar's men neared throwing distance, without orders, they stopped to rest and regroup before continuing the charge;[8] Pompey's right and centre line held as the two armies collided. Caesar countered this by positioning the reserves of his 4th line to intercept the attacking cavalry.
As Pompey's infantry fought, Labienus ordered the Pompeian cavalry on his left flank to attack Caesar's cavalry; as expected they successfully pushed back Caesar's cavalry. Caesar then revealed his hidden fourth line of infantry and surprised Pompey's cavalry charge; Caesar's men were ordered to leap up and use their pila to thrust at Pompey's cavalry instead of throwing them. Pompey's cavalry panicked and suffered hundreds of casualties, as Caesar's cavalry came about[9] and charged after them. After failing to reform, the rest of the Pompey's cavalry retreated to the hills, leaving the left wing of Pompey's legions exposed to the hidden troops as Caesar's cavalry wheeled around their flank. Caesar then ordered in his third line, containing his most battle-hardened veterans, to attack. This broke Pompey's left wing troops, who fled the battlefield.[10]
system
farsalas kii ladaai main payalam ke upyog ko sankshep main prastut karen

48 isa purv main, pompi da great ne farsalas kii ladaai main julius seizar ke khilaaf iskaa istemaal karne kaa prayaas kiya, jo ki mahaan roman grihayuddh kii nirnaayak ladaai thi.seizar ne pompi ke "haimer" tatv ko paidal sena kii ek chhipi hui chauthi pankti ke saath ghaat lagaakar iskaa muqabla kiya; [5] pompi kii paidal sena ko equil hona tha, jabaki uski ghudsavaar sena ke hathaudaa ne seizar ke baayen flank ko gher liya tha.seizar ke anusaar, donon senaaon ke bich mahatvapurn duuri thi. [6]
seizar kii paidal sena ke rup main unnat, pompi ne apane aadamiyon ko charge nahin karne kaa aadesh diya, lekin seizar ke diggajon ke kareeb aane tak intjaar karne ke liye;pompi ke salaahkaar gayus trysius kaa maananaa tha ki seizar kii paidal sena thakaa hua hoga or agar unhen yuddh march kii apekshit duuri ko do baar cover karne ke liye majaboor kiya gaya tha, to vah vikaar main gir jayega.iske alaava, sthir sainikon ko pilaa thro ke khilaaf behatar bachaav karne main sakasham hone kii ummid thi. [7]yah dekhakar ki pompi kii sena aage nahin bad rahi thi, mark antni ke tahat seizar kii paidal sena or ganess dominius kelvins ne agrim shuruyaat kii.jaisaa ki seizar ke log bina kisi aadesh ke duuri par phenkate hue duuri tay karte hai, ve charge ko jari rakhane se pehle aaraam karne or phir se ikattha hone ke liye ruk gaye; [8] pompi kii dayee ore or centre line do senaaon ke takaraane ke saath yojit kii gai.seizar ne hamalavar ghudsavaar sena ko baadhit karne ke liye apni chauthi pankti ke bhandar ko sthaan dekar iskaa muqabla kiya.
jaisaa ki pompi kii paidal sena ne ladi, labiens ne seizar kii ghudsavaar sena par hamalaa karne ke liye apane baayen flank par pompeyan cavelleri kaa aadesh diya;ummid ke mutabik, unhone safaltaapurvak seizar kii ghudsavaar sena ko peeche dhakel diya.seizar ne tab paidal sena kii apni chhipi hui chauthi pankti kaa khulaasa kiya or pompi ke cavelleri charge ko aashcharyachakit kiya;seizar ke logon ko aadesh diya gaya tha ki ve chalaang lagane ke liye pompi kii ghudsavaar sena main jor dene ke liye apane pil ko uchhaalen.pompi kii ghudsavaar sena ghabara gai or saikadon hataahaton kaa saamana karnaa padaa, kyonki seizar kii ghudsavaarta ke bare main [9] or unke baad aropit kiya gaya.sudhaar karne main vifal rahane ke baad, pompi kii cavelleri ke baaki log pahadiyon par peeche hat gaye, jisase pompi ke diggajon kii vampanthi wing ko chhipe hue sainikon ke sampark main aa gaya, kyonki seizar ke ghudsavaar sena ne apane flank ke chaaron ore pahiyaa.seizar ne tab apni teesri pankti main aadesh diya, jisamen apane sabase yuddh-kathor diggajon ko hamalaa karne kaa aadesh diya gaya tha.isane pompi ke baayen wing sainikon ko tod diya, jo yuddh ke maidan se bhaag gaye. [10]
user
pompi da great ne julius seizar ke sainikon dwaara niojit pilaa ko hathiyaaron ko phenkane ke rup main istemaal karne kii ummid kii thi.parinamswaroop unhone apane sainikon ko charge karne se bachane kaa aadesh diya, jo ki unke khilaaf behatar bachaav ke liye bhaag main tha.pompi kii ghudsavaar sena ke khilaaf karyrat infentry seizar kii chhipi hui chauthi pankti ne apane pilaa ko nahin phenkaa, balki unhen thrusting hathiyaaron ke rup main istemaal kiya.
assistant
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<|user|>
farsalas kii ladaai main payalam ke upyog ko sankshep main prastut karen

48 isa purv main, pompi da great ne farsalas kii ladaai main julius seizar ke khilaaf iskaa istemaal karne kaa prayaas kiya, jo ki mahaan roman grihayuddh kii nirnaayak ladaai thi.seizar ne pompi ke "haimer" tatv ko paidal sena kii ek chhipi hui chauthi pankti ke saath ghaat lagaakar iskaa muqabla kiya; [5] pompi kii paidal sena ko equil hona tha, jabaki uski ghudsavaar sena ke hathaudaa ne seizar ke baayen flank ko gher liya tha.seizar ke anusaar, donon senaaon ke bich mahatvapurn duuri thi. [6]
seizar kii paidal sena ke rup main unnat, pompi ne apane aadamiyon ko charge nahin karne kaa aadesh diya, lekin seizar ke diggajon ke kareeb aane tak intjaar karne ke liye;pompi ke salaahkaar gayus trysius kaa maananaa tha ki seizar kii paidal sena thakaa hua hoga or agar unhen yuddh march kii apekshit duuri ko do baar cover karne ke liye majaboor kiya gaya tha, to vah vikaar main gir jayega.iske alaava, sthir sainikon ko pilaa thro ke khilaaf behatar bachaav karne main sakasham hone kii ummid thi. [7]yah dekhakar ki pompi kii sena aage nahin bad rahi thi, mark antni ke tahat seizar kii paidal sena or ganess dominius kelvins ne agrim shuruyaat kii.jaisaa ki seizar ke log bina kisi aadesh ke duuri par phenkate hue duuri tay karte hai, ve charge ko jari rakhane se pehle aaraam karne or phir se ikattha hone ke liye ruk gaye; [8] pompi kii dayee ore or centre line do senaaon ke takaraane ke saath yojit kii gai.seizar ne hamalavar ghudsavaar sena ko baadhit karne ke liye apni chauthi pankti ke bhandar ko sthaan dekar iskaa muqabla kiya.
jaisaa ki pompi kii paidal sena ne ladi, labiens ne seizar kii ghudsavaar sena par hamalaa karne ke liye apane baayen flank par pompeyan cavelleri kaa aadesh diya;ummid ke mutabik, unhone safaltaapurvak seizar kii ghudsavaar sena ko peeche dhakel diya.seizar ne tab paidal sena kii apni chhipi hui chauthi pankti kaa khulaasa kiya or pompi ke cavelleri charge ko aashcharyachakit kiya;seizar ke logon ko aadesh diya gaya tha ki ve chalaang lagane ke liye pompi kii ghudsavaar sena main jor dene ke liye apane pil ko uchhaalen.pompi kii ghudsavaar sena ghabara gai or saikadon hataahaton kaa saamana karnaa padaa, kyonki seizar kii ghudsavaarta ke bare main [9] or unke baad aropit kiya gaya.sudhaar karne main vifal rahane ke baad, pompi kii cavelleri ke baaki log pahadiyon par peeche hat gaye, jisase pompi ke diggajon kii vampanthi wing ko chhipe hue sainikon ke sampark main aa gaya, kyonki seizar ke ghudsavaar sena ne apane flank ke chaaron ore pahiyaa.seizar ne tab apni teesri pankti main aadesh diya, jisamen apane sabase yuddh-kathor diggajon ko hamalaa karne kaa aadesh diya gaya tha.isane pompi ke baayen wing sainikon ko tod diya, jo yuddh ke maidan se bhaag gaye. [10]</s>
<|assistant|>
pompi da great ne julius seizar ke sainikon dwaara niojit pilaa ko hathiyaaron ko phenkane ke rup main istemaal karne kii ummid kii thi.parinamswaroop unhone apane sainikon ko charge karne se bachane kaa aadesh diya, jo ki unke khilaaf behatar bachaav ke liye bhaag main tha.pompi kii ghudsavaar sena ke khilaaf karyrat infentry seizar kii chhipi hui chauthi pankti ne apane pilaa ko nahin phenkaa, balki unhen thrusting hathiyaaron ke rup main istemaal kiya.</s>
