Echote's cautious, non-reckless tactics were always built on one foundation—that of sufficient firepower.
There was nothing like gravity or wind direction in space to affect things, so strictly speaking, once a shell flew ten thousand meters away, as long as it didn't hit anything, it would continue along its original trajectory. That was the source of Echote's tactics—as soon as she confirmed the appearance of the Tyranids' massive Warp Space shadow, she decisively located the Tyranid fleet's coordinates and issued the order to attack from an ultra-long range without the slightest hesitation.
As the artillery roared, howling Macro Cannon shells erupted from the barrels. After a full fifteen seconds, the first wave of shells reached the entrance to the rift in the Eye of Terror. Almost at the same time, the first wave of Tyranids poked their heads out, only to be struck head-on by the incoming shells.
It was like someone opening a door and immediately getting hit in the head by a basketball.
The first bombardment consumed roughly eighty thousand shells, but of course, that wasn't the end. Rows upon rows of artillery continued to fire without interruption. Although the Tyranids were blasted into scattered panic, this came at the cost of an astronomical amount of ammunition. Fortunately, the base behind the Inquisition was still working overtime to produce ammunition reserves and supply the front line as much as possible.
Watching this scene, Duanmu Huai couldn't help thinking of the firing lines from World War I movies, where soldiers were executed in rows. One group of soldiers lay on the ground, another knelt behind them, and the last stood upright. All of them held muskets and fired forward. Once the first row finished firing, they reloaded while the second row fired; once the second row finished, they reloaded