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Bravo Course > Machine Gun Employment > Flashcards

Machine Gun Employment Flashcards

1
Q

What are the classes of fire?

A

Respect to the weapon, ground or target

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2
Q

Classification of MG fires in relation to the ground

A

Plunging fire, grazing fire

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3
Q

Classification of MG fired in relation to the target

A

Flanking
frontal
oblique
enfilade

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4
Q

Classification of MG fired in relation to the gun

A 
Fixed
Traverse
Search
Search and traverse
Swinging traverse
Free gun
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5
Q

Describe fixed fires

A

Fire delivered on a point with little or no manipulation of the gun

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6
Q

Describe traverse

A

Fire delivered against a wide target requiring changes in direction

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7
Q

Describe searching fires

A

Fire delivered against targets in depth requiring changes in elevation

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8
Q

Describe traverse and search

A

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

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9
Q

Describe swinging traverse

A

Fire directed against targets which require major changes in direction with little or no change in elevation

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10
Q

Free gun

A

Fire directed against a target which requires major changes in both elevation and direction

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11
Q

Describe flanking fire

A

Fires on the flank of the target when the target is oriented 90deg off the long axis of the weapon

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12
Q

Describe frontal fire

A

When the front of the target is 90deg off the long axis of the gun

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13
Q

Describe oblique fire

A

When the long axis of the target is at anything other than 90deg off long axis of the gun

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14
Q

Describe enfilade fire

A

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

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15
Q

Describe danger space

A

When firing over terrain, any space up to 1.8m above the ground (avg. height of man) is danger zone

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16
Q

Describe plunging fire

A

Where the danger space is confined to the beaten zone. This is obtained by firing from high to low, or low to high when using long range fires

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17
Q

Describe grazing fire

A

Where the center of the cone of fire never rises above 1m off the ground out to 600m. Most effective type of fire

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18
Q

Keys to overhead fire

A

Coordination, communication, and situational awareness

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19
Q

Explain come of fire

A

Each round in a burst has slightly different trajectory, and the pattern created is the cone of fire

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20
Q

Gun configuration required for over head fire

A

Must use a tripod/Vic mount, and a T&E, from an elevated position

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21
Q

Gunners rule

A

Jen

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22
Q

5 safety measures for overhead fires

A 
Securely replaced mount
Stops to prevent barrel dipping
Avoid overhead obstacles
Ensure entire gun crew knows safety limits
Use reliable barrels
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23
Q

Define defilade position

A

When a gunner and crew are completely masked by terrain

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24
Q

What does a defilade positing require

A

An observer to the read and online with the gunner/target

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25
Q

What are some methods of fire control

A 
Verbal
Hand arm signals 
Prearranged signals
Personal contact 
Range cards
SOPs
26
Q

What are 6 elements of fire command

A 
ADD-RMC
Alert
Direction
Description 
Range 
Method of fire
Command to fire
27
Q

What are 8 principles of machine gun employment

A 
PIC-M-DEEP
Pairs
Interlocking fires
Coordinating fires
Mutual support
Defilade
Enfilade
Economy of ammo/forces
Protection
28
Q

How are gun teams best employed?

A

Use channelizing obstacles
Mutually support with other wins
Have pri. Alt. And sup. Positions

29
Q

Define stand off

A

Distance between your MGs max effective range and the enemy’s

30
Q

What are the 3 types of fire

A

Sustained
Rapid
Cyclic

31
Q

Rated of fire for M249SAW

A

Sus: 50RPM, 3-5RB, BC=10min
Rap: 100RPM, 6-8RB, BC=2min
Cyc: 850RPM, continuous, BC=1min

32
Q

Rates for M240B

A

Sus: 100 RPM, 6-9RB, BC=10 min
Rap: 200RPM, 10-12 RB, BC=2min
Cyc: 650-950, BC=1min

33
Q

Technique for football field air defense

A

Fast mover =2 fields

Slow mover= 1/2 field

34
Q

3 types of wire obstacles

A

Protective
Tactical
Supplementary

35
Q

Define sector of fire

A

An area covered by fire assigned to an individual, wpn system or unit. Gunners assigned primary and secondary

36
Q

Define FPF

A

Final protective fire is an immediately available prearranged barrier of fire to stop enemy movement across defensive lines or areas

37
Q

Define FPL

A

Final protective line= predetermined line along which grazing fire is used to halt enemy assault

38
Q

What is a PDF

A

Principle direction of fire= direction of fire assigned priority to cover an area with good fields of fire or a likely AOA. Also can provide mutual support to adjacent unit

39
Q

On M122 Tripod T&E what is the scale graded by

A

5 mil increments

40
Q

What are the limits of M122 traverse bar

A

450 mile left
425 mil right
875 mil total

41
Q

What is total range of M122 traverse hand wheel?

A

100 mils, but usually 80-90

42
Q

Range of mild on elevating hand wheel on M122

A

Up 200 mils
Down 200 mils
Total 400 mils
1 complete rotation=50 mil

43
Q

What’s the military designation for standard range card?

A

DA form 5517-R

44
Q

What’s the range of elevation scale for M192 tripod?

A

0-530mils

45
Q

What’s the range of traverse scale for M192

A

0-900mils

46
Q

How many mils does one full handle manipulation equal?

A

Approx. 5mil

One mil readable, not adjustable

47
Q

Define beaten zone

A

Elliptical pattern formed by rounds striking ground/target

The size and shape of zone changes due to range and terrain

48
Q

Method for determining dead space along grazing fire line

A

Soldier walks the line, during periods his waist drops out of visibility is dead space

49
Q

What are the 5 characteristics of fire

A 
Trajectory
Max ord 
Cone of fire
Beaten zone
Danger space
50
Q

8 Minimum standards for range card

A 
Weapon symbol 
Sector of fire
PDF/FPL
Range/direction and #label for predetermined targets
Dead space
Distance/direction from known point/8dig grid
Mag. North arrow
Data section
51
Q

How does beaten zone change due to range

A

Long range=short beaten zone
Short range= long beaten zone
Short men deserve long beating

52
Q

How does beaten zone change due to sloping terrain?

A

Uphill terrain= tight pattern

Downhill= long pattern

53
Q

How deep should MG platform be?

A

6”

54
Q

Gunner should only move gun and not tripod from pri position to sec position

A

True

55
Q

Any asset, direct or indirect can cover MG dead space

A

True

56
Q

What’s the manual for crew served weapons

A

FM3-22.68

57
Q

What classification of fire with respect to targets should in depth targets get

A

Targets in depth=searching fire

58
Q

Respect to ground

A

Grazing, plunging

59
Q

Respect to weapon

A 
Fixed
Traverse
Search
Search travers
Swinging traverse
Free gun
60
Q

Respect to target

A

Frontal
Flanking
Oblique
Enfilade

61
Q

Gunners rule

A

Target between 350 and 850m
Lay gun sights on target
Raise sights to 1000m and depress elevation 10 mil to determine troop safe line
Return gun sights to target

62
Q

Type of targets with type of fire with respect to weapon

A 
Point=fixed 
Area=traverse and search
Linear= traverse
Deep= searching fire
Linear with depth= traverse and search

Bravo Course (40 decks)

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