Firstly, I concur with previous posters saying that you pictured a really great battle scene, and made your TL even more interesting to read.
Secondly, I consider the new Regent's order to kill all prisoners except gunners to be a terrible, but completely understandable mistake (mistake of the sort that is worse than a crime). Gunners alone can't teach the Yadji all they need to fight off next European invasion. However, his victory will obviously be listed as one of the greatest events in historical memory of the Yadji, if not all Aururians, the final outcome of their struggle against Europeans notwithstanding.
Thirdly, that Gunnagalian noble's knowledge of European ways is fascinating. His nation's (if it can be called so) decision to contact/capture the fleeing Dutch is more expected, but still great. Of course, they risk conflict with the Yadji, but then, the Yadji-Tjibarr relations never were friendly to begin with, and now the Yadji are weakened by great losses suffered in defeating the Nuyts' invasion. On the other hand, the Yadji moral is at all-time high or near it, but still, Tjibarr (or some faction thereof?) looks completely correct in trying to use to its advantage the desperate remnants of the Dutch army.
There are some questions, too.
Did Lauren Nuyts die of swamp rash, as we don't see him fleeing with his father?
And, if I understand these passages correctly
“
The nearest soldier wears scale armour, but Batjiri hardly notices. He runs right up, with a thrust of his sword that brings down the scale-armoured man. The one behind him wears brighter colours, though that barely registers too. He has a sword, but still in position to fight the soldier who just died. Batjiri’s thrust catches the man in the shoulder, and the enemy falls. Batjiri’s boots land on the man’s jaw as he steps forward, to face another brightly-coloured enemy.
.........................
He is not capable of counting how many of the enemy have fallen. Or even of distinguishing between friends and enemies, except for those who wear the white dye. Anyone else is a foe to be cut down.
, death warriors kill their own regulars as well as enemies, because of their battle frenzy. Horrific people they are, I should admit. I'm not sure, though, that their enhanced battle capabilities are enough to offset their demoralizing effect on (more numerous) rank-and-file Yadji soldiers, who, after fighting enemy, are being killed by their own death warriors.
And a minor nitpick:
“
Worse, this small band of sixteen men are less than half of those who fled from the battlefield beside the Yadji capital. They had still numbered twenty-four when they reached Coonrura [Kingston SE, South Australia], only to find that their ships had fled before their arrival, giving up the promise of gold out of fear of the Yadilli. Now, they number only sixteen men fleeing north-west out of the Yadji lands, with the fear that every skirmish with their pursuers will cost them more blood.
In all probability, you meant the Yadji, as the Yadilli were Dutch allies before the defeat and were mostly destroyed after it.