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MG Employment > Know these > Flashcards

Know these Flashcards

1
Q

Whats FM’s cover Machine gun employment

A

FM 3-22.68

FM 3-21.8

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2
Q

Describe the Cone of Fire

A

Each round fired in a burst from the same weapon has a slightly different trajectory.

The pattern these rounds create on way to the target is the Cone of Fire

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3
Q

What is the Beaten Zone

A

The Beaten Zone is the elliptical pattern formed when rounds within the Cone of Fire strike the ground or target and is the Primary way of adjusting fire.

85% of the rounds fall is considered effective Beaten Zone

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4
Q

What is Danger Space

A

Space between the machine gun and the target where trajectory rises less that 1.8m above the ground.

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5
Q

What are the three Classes of Fire

A

Respect to the Ground

Respect to the Target

Respect to the Weapon

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6
Q

What are the two subcategories of Respect to the Ground

A

Grazing Fire: When the center of the cone of fire is less than 1m above the ground.

Plunging Fire: When Danger Space is within the Beaten Zone

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7
Q

What are the six subcategories to Respect to the Weapon

A 
Fixed
Traversing Fire
Searching Fire
Traversing and Searching Fire
Swinging Traverse
Free Gun
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8
Q

What are the four subcategories to Respect to the Target

A

Frontal Fire
Flanking Fire
Oblique Fire
Enfilade Fire

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9
Q

What are the appropriate fires for respective targets

A 
Point Targets - Fixed
Area Targets - Traversing and Searching
Linear Targets - Traversing Fire
Deep Targets - Searching Fire
Linear Target with Depth - Traversing and Searching
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10
Q

What is Overhead fires

A

Only delivered from Tripod or Vehicle using T&E and friendlies between 350-850m

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11
Q

What is a Defilade Position

A

When MG and Crew are completely masked by terrain from the enemy. Observer Controls fire from Defilade

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12
Q

What are the six Methods of Fire Control

A 
Prearranged Signals
Range Cards
Personal Contact
Verbal
Hand/Arm Signal
SOP's
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13
Q

What are the six Fire Commands

A 
Alert
Direction
Description
Range
Method of Fire
Command to fire
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14
Q

What are the Principles of Machine Gun Employment

A 
Mutual Support
Coordination
Interlocking Fire
Sited in Defilade
Sited to Produce Enfilade Fire
Cover and Concealment 
Economy of Ammunition
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15
Q

What are the Sustained rates of Fire for M249, M-60, & M240B

A

M249: 50 RNDs/MIN, 3-5 RND burst

M60/240B: 100 RND/MIN, 6-9 RND burst

Barrel change every 10 minute

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16
Q

What are the Rapid rates of Fire for M249, M-60, & M240B

A

M249: 100 RNDs/MIN, 6-8 RND burst

M60/240B: 200 RND/MIN, 10-12 RND burst

Barrel change every 2 minute

17
Q

What are the Cyclic rates of Fire for M249, M-60, & M240B

A

M249: 850 RNDs/MIN

M60: 550 RND/MIN

240B: 650-950RND/MIN

Barrel change every 1 minute

18
Q

What is the DA Form for a Range Card

A

DA Form 5517

x2 Copies

19
Q

What is Final Protective Fire (FPF)

A

An immediate prearranged barrier of fire to stop enemy movement across defense lines or areas

20
Q

What is Final Protective Line (FPL)

A

Predetermined line along which grazing fire is placed to stop enemy assault.

Fixed in direction and elevation.

Grazing fire over various types of terrain out to 600m.

To prevent enemy from crawling under Grazing fire, search toward by lowering the muzzle.

21
Q

What is Dead Space

A

Any fold or depression in the ground that prevents a target from being engaged from a Fixed position

22
Q

Firing Position/Table

A

Firing table should be 4-6 inches down with the barrel as close to the ground as possible

23
Q

What is the highest unit level on a Ranger Card (DA Form 5517)

A

Company

24
Q

Where do you put your Machine Gun in an L-Shaped Ambush

A

At the apex/dog leg of the L-Shaped Ambush using Searching Fire

25
Q

Most desirable type of fire in respect to the Target

A

Enfilade Fire

26
Q

What is the #1 priority target

A

Anything that can’t destroy your weapon

27
Q

What is the best way to Adjust Fire

A

The Beaten Zone, Followed by Tracer Rounds

28
Q

What is Plunging Fire

A

Occurs when Danger Space is within the Beaten Zone

At longer ranges when firing from high ground to low ground

When firing into abruptly rising ground or across uneven terrain.

29
Q

Principle Direction of Fire (PDF)

A

PDF is assigned to cover an area that has good fields of fire or has a likely avenue of approach.

only used is FPL is not assigned, then becomes part of unit’s FPF

30
Q

When moving from Primary fighting position to Secondary fighting position -

A

Leave the Tripod, take ammo and other means to fire machine gun

31
Q

What is Grazing Fire

A

Occurs when the center of the Cone of Fire rises less than 1m off the ground out to 600m

MG Employment (2 decks)

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