How many golf courses are there in Roi Et area , say within 20km . I know of an army course and 1 other both 9 holes but a friend seems to think there is an 18 hole course there but I cannot find any info with a Google search . I looked in the archives /golf forums and the question had been asked before but not fully answered .

Your help is much appreciated .

There's a 9 hole course in the city of Roi Et army base as well as another Roi-Et 9 hole army base course in Si Somdet, Roi Et near Maha Sarakham.  You can search สนามกอล์ฟโสกเชือก to find it.

Closest would be in Khon Kaen

http://birdie.in.th/en/golf-courses/thailand/khon-kaen