Page 1 of 78
TBS - Phase 3 Exam (2025) | Rated A Questions and
Verified Answers
Trajectory .....ANSWER.....The arching flight path of the round
from the muzzle of the weapon to the target.
Ordinate .....ANSWER.....Elevation of the flight path of the round
above the line of sight
Max Ordinate .....ANSWER.....The maximum elevation of that
round above the line of sight along its flight path. This distance is
reached at 2/3 the distance to the target
Cone of Fire .....ANSWER.....The pattern of a fired rounds based
on vibration, tolerances of the ammunition and weapon, and
shooter positions.
Beaten Zone .....ANSWER.....The elliptical pattern formed by the
impact of the round
,Page 2 of 78
Dead Space .....ANSWER.....Occurs anytime the target (or enemy)
drops below the line of aim or line of sight.
Danger Space .....ANSWER.....The area between the muzzle and
the beaten zone where the bottom of the cone of fire does not
rise above 1.8 meters (the height of an average standing man -
70").
Plunging Fire .....ANSWER.....Where the danger space is confined
to the beaten zone. Plunging fire is obtained when firing from
high ground to low ground or low ground to high ground.
Grazing Fire .....ANSWER.....Defines fire where the center of the
cone of fire does not rise more than one meter off the deck. This
is the most effective type of fire we can employ, and we will
always seek a position where we can bring the greatest amount
of grazing fire upon the enemy.
,Page 3 of 78
Flanking Fire .....ANSWER.....Fires delivered on the flank of a
target when the target is oriented 90 or more degrees away
from the firing unit.
Frontal Fire .....ANSWER.....Fire delivered on the front of a
target, when the target is oriented on the firing unit.
Oblique Fire .....ANSWER.....Fire delivered on the oblique of a
target, when the target is oriented between 0 and 90 degrees to
the firing unit.
Enfilade Fire .....ANSWER.....The long axis of the beaten zone
coincides with or nearly coincides with the long axis of the target.
This class of fire is either Frontal or Flanking and is the most
desirable class of fire with respect to the target, because it
maximizes the use of the beaten zone
Fixed Fire .....ANSWER.....Fire delivered on a point target. Little
or no manipulation of the gun is required to obtain and maintain
effect on target.
, Page 4 of 78
Traversing Fire .....ANSWER.....Fire delivered against a wide
target requiring changes in direction.
Searching Fire .....ANSWER.....Fire delivered against a target in
depth requiring changes in elevation.
Traversing & Searching Fire .....ANSWER.....Fire delivered against
an oblique target requiring changes in both elevation and
direction
Swinging Traverse Fire .....ANSWER.....Fire delivered against
targets which require major changes in direction with little or no
change in elevation. Fired at the cyclic rate of fire using the
tripod.
Free Gun .....ANSWER.....Fire delivered against moving targets
that require major changes in both direction and elevation. The
T&E is not used as the manipulation is done by the Gunner.
MG Employment Principles .....ANSWER.....Pairs
TBS - Phase 3 Exam (2025) | Rated A Questions and
Verified Answers
Trajectory .....ANSWER.....The arching flight path of the round
from the muzzle of the weapon to the target.
Ordinate .....ANSWER.....Elevation of the flight path of the round
above the line of sight
Max Ordinate .....ANSWER.....The maximum elevation of that
round above the line of sight along its flight path. This distance is
reached at 2/3 the distance to the target
Cone of Fire .....ANSWER.....The pattern of a fired rounds based
on vibration, tolerances of the ammunition and weapon, and
shooter positions.
Beaten Zone .....ANSWER.....The elliptical pattern formed by the
impact of the round
,Page 2 of 78
Dead Space .....ANSWER.....Occurs anytime the target (or enemy)
drops below the line of aim or line of sight.
Danger Space .....ANSWER.....The area between the muzzle and
the beaten zone where the bottom of the cone of fire does not
rise above 1.8 meters (the height of an average standing man -
70").
Plunging Fire .....ANSWER.....Where the danger space is confined
to the beaten zone. Plunging fire is obtained when firing from
high ground to low ground or low ground to high ground.
Grazing Fire .....ANSWER.....Defines fire where the center of the
cone of fire does not rise more than one meter off the deck. This
is the most effective type of fire we can employ, and we will
always seek a position where we can bring the greatest amount
of grazing fire upon the enemy.
,Page 3 of 78
Flanking Fire .....ANSWER.....Fires delivered on the flank of a
target when the target is oriented 90 or more degrees away
from the firing unit.
Frontal Fire .....ANSWER.....Fire delivered on the front of a
target, when the target is oriented on the firing unit.
Oblique Fire .....ANSWER.....Fire delivered on the oblique of a
target, when the target is oriented between 0 and 90 degrees to
the firing unit.
Enfilade Fire .....ANSWER.....The long axis of the beaten zone
coincides with or nearly coincides with the long axis of the target.
This class of fire is either Frontal or Flanking and is the most
desirable class of fire with respect to the target, because it
maximizes the use of the beaten zone
Fixed Fire .....ANSWER.....Fire delivered on a point target. Little
or no manipulation of the gun is required to obtain and maintain
effect on target.
, Page 4 of 78
Traversing Fire .....ANSWER.....Fire delivered against a wide
target requiring changes in direction.
Searching Fire .....ANSWER.....Fire delivered against a target in
depth requiring changes in elevation.
Traversing & Searching Fire .....ANSWER.....Fire delivered against
an oblique target requiring changes in both elevation and
direction
Swinging Traverse Fire .....ANSWER.....Fire delivered against
targets which require major changes in direction with little or no
change in elevation. Fired at the cyclic rate of fire using the
tripod.
Free Gun .....ANSWER.....Fire delivered against moving targets
that require major changes in both direction and elevation. The
T&E is not used as the manipulation is done by the Gunner.
MG Employment Principles .....ANSWER.....Pairs
