cut loose with point-detonationa

[GoodTaste]

...sinking when the weary engineers set up a night defense, and at that moment the howitzers of How Battery cut loose with point-detonationa and proximity bursts which hit the Chinese positions with deadly accuracy.
Source: The Chosin Reservoir Campaign
Does "cut loose with point-detonationa" mean "did a good job with point-detonation"?

 

[Skrej]

No. See definition #1. The howitzer crews suddenly started firing as quickly as they could.

edit: Point detonation simply refers to the type of rounds being fired, which explode on point of impact, compared to proximity bursts which explode in the air above the target.