Considering this post seems to have picked up again:
In a strange alternate non canon timeline, the STE somehow took over a distant galaxy
Likely by infecting everyone with a parasite all tau's carry: the "hart eter" parasite
Via this and hundreds of years, they took over the "GIB" galaxy.
Through this, they obtained many ships.
And so are happy to join the fray:
a "small" STE fleet
While warping in, the ships manage to bump into some poor Jesus3747 drone
They immediately aim all their guns at the three cruisers
(also, Jesus3747, those ships look so good, like how did you even)
Noticing the blip of the charging of their ventral weapons, they spread out to reduce casualties.
The small corvettes focus fire on the combat drones.
Likely destroying many.
However, aboard the bridge of the central deadlock class:
"WHAT! How did they (Brank) get OUR guns!"
"what? They are only naval cannons, I'm sure everyone has them"
"but... wait, you mean humans had a 'world war' too?"
"yes, yes they did"
"oh, that explains a lot"