Machine Gun Employment

Question 1

What are the classes of fire?

Answer 1

Respect to the weapon, ground or target

Question 2

Classification of MG fires in relation to the ground

Answer 2

Plunging fire, grazing fire

Question 3

Classification of MG fired in relation to the target

Answer 3

Flanking
frontal
oblique
enfilade

Question 4

Classification of MG fired in relation to the gun

Answer 4

Fixed
Traverse
Search
Search and traverse
Swinging traverse
Free gun

Question 5

Describe fixed fires

Answer 5

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

Question 6

Describe traverse

Answer 6

Fire delivered against a wide target requiring changes in direction

Question 7

Describe searching fires

Answer 7

Fire delivered against targets in depth requiring changes in elevation

Question 8

Describe traverse and search

Answer 8

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

Question 9

Describe swinging traverse

Answer 9

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

Question 10

Free gun

Answer 10

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

Question 11

Describe flanking fire

Answer 11

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

Question 12

Describe frontal fire

Answer 12

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

Question 13

Describe oblique fire

Answer 13

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

Question 14

Describe enfilade fire

Answer 14

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

Question 15

Describe danger space

Answer 15

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

Question 16

Describe plunging fire

Answer 16

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

Question 17

Describe grazing fire

Answer 17

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

Question 18

Keys to overhead fire

Answer 18

Coordination, communication, and situational awareness

Question 19

Explain come of fire

Answer 19

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

Question 20

Gun configuration required for over head fire

Answer 20

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

Question 21

Gunners rule

Answer 21

Jen

Question 22

5 safety measures for overhead fires

Answer 22

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

Question 23

Define defilade position

Answer 23

When a gunner and crew are completely masked by terrain

Question 24

What does a defilade positing require

Answer 24

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

Question 25

What are some methods of fire control

Answer 25

``` Verbal Hand arm signals Prearranged signals Personal contact Range cards SOPs ```

Question 26

What are 6 elements of fire command

Answer 26

``` ADD-RMC Alert Direction Description Range Method of fire Command to fire ```

Question 27

What are 8 principles of machine gun employment

Answer 27

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

Question 28

How are gun teams best employed?

Answer 28

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

Question 29

Define stand off

Answer 29

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

Question 30

What are the 3 types of fire

Answer 30

Sustained Rapid Cyclic

Question 31

Rated of fire for M249SAW

Answer 31

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

Question 32

Rates for M240B

Answer 32

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

Question 33

Technique for football field air defense

Answer 33

Fast mover =2 fields | Slow mover= 1/2 field

Question 34

3 types of wire obstacles

Answer 34

Protective Tactical Supplementary

Question 35

Define sector of fire

Answer 35

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

Question 36

Define FPF

Answer 36

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

Question 37

Define FPL

Answer 37

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

Question 38

What is a PDF

Answer 38

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

Question 39

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

Answer 39

5 mil increments

Question 40

What are the limits of M122 traverse bar

Answer 40

450 mile left 425 mil right 875 mil total

Question 41

What is total range of M122 traverse hand wheel?

Answer 41

100 mils, but usually 80-90

Question 42

Range of mild on elevating hand wheel on M122

Answer 42

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

Question 43

What’s the military designation for standard range card?

Answer 43

DA form 5517-R

Question 44

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

Answer 44

0-530mils

Question 45

What’s the range of traverse scale for M192

Answer 45

0-900mils

Question 46

How many mils does one full handle manipulation equal?

Answer 46

Approx. 5mil | One mil readable, not adjustable

Question 47

Define beaten zone

Answer 47

Elliptical pattern formed by rounds striking ground/target | The size and shape of zone changes due to range and terrain

Question 48

Method for determining dead space along grazing fire line

Answer 48

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

Question 49

What are the 5 characteristics of fire

Answer 49

``` Trajectory Max ord Cone of fire Beaten zone Danger space ```

Question 50

8 Minimum standards for range card

Answer 50

``` 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 ```

Question 51

How does beaten zone change due to range

Answer 51

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

Question 52

How does beaten zone change due to sloping terrain?

Answer 52

Uphill terrain= tight pattern | Downhill= long pattern

Question 53

How deep should MG platform be?

Answer 53

6”

Question 54

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

Answer 54

True

Question 55

Any asset, direct or indirect can cover MG dead space

Answer 55

True

Question 56

What’s the manual for crew served weapons

Answer 56

FM3-22.68

Question 57

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

Answer 57

Targets in depth=searching fire

Question 58

Respect to ground

Answer 58

Grazing, plunging

Question 59

Respect to weapon

Answer 59

``` Fixed Traverse Search Search travers Swinging traverse Free gun ```

Question 60

Respect to target

Answer 60

Frontal Flanking Oblique Enfilade

Question 61

Gunners rule

Answer 61

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

Question 62

Type of targets with type of fire with respect to weapon

Answer 62

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