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Exam 3 > Machine Gun Employment > Flashcards

Machine Gun Employment Flashcards

1
Q

Trajectory

A

The arching flight path of the round from the muzzle of the weapon to the target

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2
Q

Ordinate

A

Elevation of the flight path of the round above the line of sight

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3
Q

Maximum Ordinate

A

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

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4
Q

Cone of Fire

A

Each round fired from a machine gun travels a different path

Vibration, tolerances of the ammunition and weapon, and shooter positions all play a role in these differences

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5
Q

Cone of Fire for a M240B

A

2 mils wide

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6
Q

Beaten Zone

A

Elliptical pattern formed by the impact of the rounds

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7
Q

Dead Space

A

Occurs anytime the target (or enemy) drops below the line of aim or line of sight

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8
Q

Danger Space

A

When firing over terrain, any space up to 1.8 m above the deck (the height of an average man) is considered danger space; that is, within the effects of the rounds

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9
Q

Plunging Fire

A

Where the danger space is confined to the beaten zone (obtained when firing from high ground to low ground or low ground to high ground and when using long range fires)

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10
Q

Grazing Fire

A

Where the center of the cone of fire does not rise more than one meter off the deck

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11
Q

Classification of Fires in Relation to the Ground

A

Dead Space
Danger Space
Plunging Fire
Grazing Fire

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12
Q

Classification of Fires in Relation to the Target

A

Flanking Fire
Frontal Fire
Oblique Fire
Enfilade Fire

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13
Q

Classification of Fires in Respect to the Gun

A 
Fixed
Traversing
Searching
Traversing and Searching
Swinging Traverse
Free Gun
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14
Q

Flanking Fire

A

Fires delivered on the flank of a target, when the target is oriented 90 or more degrees away from the firing unit

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15
Q

Frontal Fire

A

Fire delivered on the front of a target, when the target is oriented on the firing unit

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16
Q

Oblique Fire

A

Fire delivered on the oblique of a target, when the target is oriented between 0 and 90 degrees to the firing unit

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17
Q

Enfilade Fire

A

The long axis of the beaten zone coincides with or nearly coincides with the long axis of the target

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18
Q

Fixed Fires

A

Fire delivered on a point target. Little or no manipulation of the gun is required to obtain and maintain effect on target

19
Q

Traversing Fires

A

Fire delivered against a wide target requiring changes in direction

20
Q

Searching Fires

A

Fire delivered against a target in depth requiring changes in elevation

21
Q

Traversing & Searching Fires

A

fire delivered against an oblique target requiring changes in both elevation and direction

22
Q

Swinging Traverse Fires

A

e 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

23
Q

Free Gun

A

Fire delivered against moving targets that require major changes in both direction and elevation (can only be produced from a tripod or vehicle mount)

24
Q

Employment Principles

A 
PICMDEEP
Pairs
Interlocking Field of Fires
Coordination of Fires
Mutual Support
Defilade
Enfilade
Economy
Protection
25
Q

Classifications of Fighting Positions

A

Primary Position
Alternate Position
Supplemental Position

26
Q

Primary Position

A

The position from which the gun will fire it’s primary sector of fire

27
Q

Alternate Position

A

A secondary position from which the gun will fire it’s primary sector of fire

28
Q

Supplemental Position

A

Another separate prepared position from which the gun fires a secondary or alternate sector of fire

29
Q

Types of Fighting Positions

A

L-Shape Fighting Position
T-Shaped Fighting Position
Horse-Shoe Fighting Position
Two Hole Fighting Position

30
Q

L-Shape Fighting Position

A

When only one sector of fire is assigned, only one half of the position is dug (L-shape).
The PDF or FPL (the machine gun’s mission) must parallel either arm of the “L.” The L-shaped position should always be improved upon to make a “T” or horseshoe-shaped position

31
Q

T-Shaped Fighting Position

A

The most preferred position to employ. This position will provide both primary and secondary sectors of fire

32
Q

Horse-Shoe Fighting Position

A

The open end of the horseshoe is toward the enemy, this allows for easy 180-degree traverse across the frontage, but provides less frontal cover than the T-shaped position. Protection from indirect fire greater than the “T”-shaped position

33
Q

Two Hole Fighting Position

A

Uses two one-man fighting holes at 90-degree angles. Provides excellent protection for the gunner and assistant gunner but allows only limited traverse of the gun. Each hole is dug as a standard one-man fighting hole. When switching from the primary to the alternate sectors of fire, the gunner and the assistant gunner switch roles

34
Q

Support Relationships

A

General Support
Direct Support
Attachment

35
Q

General Support

A

Use of Fires - Company Commander
Tactical Control - Weapons Platoon Commander
Admin & Logistics - Weapons Platoon Commander

36
Q

Direct Support

A

Use of Fires - Supported Unit Leader
Tactical Control - Machine Gun Section/Squad Leader
Admin & Logistics - Weapons Platoon Commander

37
Q

Attached

A

Supported Unit Leader has full control

38
Q

Displacement Considerations

A 
MORT
Method (Echelon or Unit)
Objective
Route
Time
39
Q

Classification of Offensive Fires

A

Close Supporting Fires
Long Range Fires
Flank Protection Fires
Fires in Support of Consolidation

40
Q

Two Machine Gun Tactical Tasks

A

Principal Direction of Fire (PDF)

Final Protective Line (FPL)

41
Q

Principal Direction of Fire (PDF)

A

The weapons primary focus is covering a likely avenue of approach, key piece of terrain, or whatever object of interest that unit leader assigns it

42
Q

Final Protective Line (FPL)

A

This mission dictates that the weapon is primarily in a position to employ grazing fires across a units’ frontage as a last effort to defend the lines

43
Q

ADDRAC

A 
Alert
Direction
Description
Range
Assignment
Control
44
Q

What is a Range Card

A

A range card is a diagram drawn to record the firing data and mission of that machine gun position and also serves as a document to assist in defensive fire planning

Exam 3 (11 decks)

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