Location of bootcamp drivers within windows partition
So I just bought a new MB 12", upgraded to High Sierra then I proceeded to win10 installation via Bootcamp. I prepared the w10 installation iso file, Fired up bootcamp assistant, got everything downloaded, and things seem to be moving along. Then after the w10 installation, I noticed 'part' of the splash screen for bootcamp driver but nothing appeared to be running/installing. So I re-started the w10, hoping the bootcamp setup would kick in, but sadly no. Now I have w10 installed but hardly any driver loaded, INCLUDING wifi so no net access.
I would imagine the bootcamp driver setup program would run off related files saved on my windows partition so would appreciate if someone can point out the location?
If I go back to HighSierra, I can download the bootcamp driver/setup program again but I can ONLY save it on the MacOS partition which I canNOT access from windows and no, I don't have any USB-C flash drive for this purpose. I guess I'll have to get one if I cannot find the bootcamp driver on my win partition...
Thanks in advance for help & pointers.
MacBook, macOS High Sierra (10.13.4), early 2016