Watching SG1 s10e7, and a jaffa uses one of the team's radios to talk with Daniel Jackson and then to deliver orders to his subordinate, and it made me wonder why the goa'uld never gave the jaffa handheld communicators. It seems like all messages are delivered by word of mouth except for ship to ship communication, and the communication balls which are apparently only used by the goa'uld themselves. Given how useful it would be for coordinating troops I'm surprised they don't have them. I wonder why the showrunners never thought to give them something like a goa'uld radio.
In my head canon the Jaffa were used as more of a source of projecting power and fear but not so much being used to wage war in the sense that we wage war. They aren't actually trying to win a war by military tactics, it's more of a distraction from boredom since they're thousands of years old.
Something like the Goa'uld is playing high stakes chess and have to play by their own rules, while SG1 doesn't play by their preset rules and plays to win.