I prefer nightops automatic weapons I.M.P. char ( I play usually with one char, except insane), when i want to stay in town and defend, then get to the rooftop, you have better view and you are harder to hit, not mentioning, that you can anytime go step or two back to get out of LOS, two or three soldiers on different roofs with rifles and one secondary weapon (quick burst fire is good) can ceep sector well defended, in need you can retreat to the center of town on some roof and get them together, then you can have one spotter and other can snipe. I found out, that in 1.13 mod is night ops much easier than dayfights, in original JA2 is better to fight in day, until you have specialized equipement.