Turkish words in your language

I am not linguistist, And I don't claim on having a special knowledge on Turkic languages, but 'askar(glotal 'ayn a very classical Semitic sound) is a very well known word in Arabic litreature, for example in 10th century, Motannabi famous Arab poet, in Azadodlleh Deylami court, has a Qasideh which praise Azadodlleh Buyyid Amir that destroyed Vahsudan Army Deylami Amir of Azarbaijan.

which says:
nalta va mAnalta men mazrata vah sudhAn mANAla ra'yoho alfAsed
........
........
......
va layta yawmi fanA'a 'askarah  va lam takon Daniyan va ShAhed

And Every day you destroy his Army , although you were not present there or seeing it.

older in 9th centry:

11th Imam of Shiis and father of 12th Imam of Shiis (Imam Mahdi)is Imam Hasan 'askari becasue most of times he was in jail in military camps.

Is it possible for anybody to show me a similar time that this word ('askar) has been used in Turkic litreature?

I can't accept that because Arabic language is different with persian and Turkish, in Arabic there is not preffix and suffix, foreign words that are borrowed can not combine with other words to produce compound words.so 'askar is completely Arabic or not.

And About er and 'askar, we have a similar Iranic word, Lashkar or Lashgar or Lashkir which has the same meaning of 'askar, And it has been used from  PreIslamic era, So what can we say ? was that borrowed too? How?

Ordu might be  from  mongolian languages.

Bad Actually Abad if used as adjective means habitable,inhabited,cultivated
if used as suffix means  habitation.
it has been derived from Ab which which means water in Persian.(Dehkhoda Dictionary which is the most trusted source in Persian language)

Well I don't want to enter the details of this discussion because here is a linguistic room and this discussion belongs to  Post classical mddle east, I just summarize your points (As I got it)and try to answer it.

1)In ilkhanid time Turkic language(which one ?) was official in Iran.
2)The Ilkhanid were Turkified within
3)Teir soldiers were Turks
4)Their clerks were uighur
5)gradually after accepting Islam the ruling elite became more and more Turkified.

my answer:

1)In Ilkhanid Time (and 50 years after Temuchin Conquest and Holagu) there were two divani languages Persian and mongolian which was written in Uighur scripts This condition continued unitl ghazan khan when Mongolian was used only for communication with great kHan.

2)Ilkhanid khaqans and princes and nobles considered themselves mongols and spoke mongolian(they want to seperate themselves from others) having Changiz blood or belong to original tribes of olus of changiz khan was considered a great honour.

3)not all of them, actually some of the elite tribes like sulduz and jalayer and some others were mongols and had special place, but this is true that as time passed Turkic tribes dominated the military.

4)in the first 50 years of mongol domination(before Hulagu) and even in times of Hulagu Chinese and uighur experts were used along the local administrative system, but as time passed Iranian dominated the administrative system.(from Joveyni to sa'doddolleh
to Rashideddin and others..)

5)Ruling elite always retained their mongolic identity until when the ilkhanid stopped and Abusa'id died.After that time in khorasan Sarbedaran sweeped any trace of mongols and in Azarbaijan, and Iraq, mongols and eastern turks were assimilated in oghuz culture.

in the end I just want to emphasis that in 13th century mongolian language was used along with persian in administrative system of Ilkhans.
from that era many turkic and mongolian words entered in Persian.