turret-down

Ensure that positions allow vehicle commanders, loaders, and/or gunners (as applicable for each vehicle) to observe the engagement area from the turret-down position and engage enemy forces from the hull-down position.

FM 71-1 Chapter 4 Defensive Operations United States Army 1998

Owens went backwards in high-speed reverse into a turret-down position and left it to the others to take up the shooting while he sought an alternative site.

First Clash Macksey, Kenneth 1984

Linkman was almost the first to see them, from a splendid place of observation turret-down near the crest.

First Clash Macksey, Kenneth 1984