Machine Gun Employment

Question 1

What is the manual for Crew Served Machine Guns?

Answer 1

FM 3-22.68

Question 2

What is the Max Ordinate

Answer 2

Highest point of trajectory between muzzle and the base of the target. Usually 2/3 of the range.

Question 3

What is the Cone of Fire?

Answer 3

Pattern a burst of fire makes in the air on it’s way to the target.

Question 4

What is the beaten zone?

Answer 4

Elliptical Pattern forme on the ground by the impact of the rounds.

Question 5

What is the danger space?

Answer 5

Space between the MG and target where the trajectory is less than 1.8m above the ground.

Question 6

Three classes of fire?

Answer 6

• Respect to the ground
• Respect to the gun
• Respect to the target

Question 7

Two types of fire in respect to the ground.

Answer 7

• Grazing Fire

- Plunging Fire

Question 8

Six types of fire in respect to the gun?

Answer 8

• Fixed Fire
• Traversing Fire
• Searching Fire
• Traverse and Search
• Swinging Traverse
• Free Gun

Question 9

What is fixed fire?

Answer 9

Point target when depth of beaten zone covers the target

Question 10

What is traversing fire?

Answer 10

Fire distributed in width.

Question 11

What is searching fire?

Answer 11

Fire distributed in depth.

Question 12

What is traversing and searching fire

Answer 12

Fire in depth and width

Question 13

What is swinging traverse?

Answer 13

Fire in wider distance than lateral

Question 14

What is free gun?

Answer 14

Rapid major changes in direction and elevation.

Question 15

What are the four fires in respect to target?

Answer 15

• Frontal Fire
• Flanking Fire
• Oblique Fire
• Enfilade Fire

Question 16

What is frontal fire?

Answer 16

Long axis of the beaten zone is in line with the target at a right angle.

Question 17

What is flanking fire?

Answer 17

Gunner is on the flank of the target

Question 18

What is oblique fire?

Answer 18

Fire at anything other than a right angle.

Question 19

What is enfilade fire?

Answer 19

The long axis of the beaten zone covers the long axis of the target.

Question 20

What are applications of fire?

Answer 20

Methods used to cover a Target area

Question 21

What is the application of fire for a point target?

Answer 21

Fixed fire.

Question 22

What is the application of fire for area targets?

Answer 22

Gunner fires center mass, then traverses and searches.

Question 23

What is the application of fire for linear targets

Answer 23

Initial point of aim is in the middle, then gunner adjusts.

Question 24

What is the application of fire for a deep target?

Answer 24

Searching fire

Question 25

At what ranges can you employ overhead fires?

Answer 25

350m-850m

Question 26

What AR covers safety measures for overhead fires?

Answer 26

AR 350-63

Question 27

What are the conditions of a defilade position?

Answer 27

- Machine gun and crew are completely behind masking terrain. - Must have an observer

Question 28

What are the six elements of fire commands?

Answer 28

- Alert - Direction - Description - Range - Method of Fire - Command to Fire

Question 29

What are the principles of Machine Gun Employment?

Answer 29

``` Pairs Interlocking fields of fire Coordination of Fires Mutual Support Defilade Enfilade Economy Protection ```

Question 30

What are the three rates of fire?

Answer 30

Sustained Rapid Cyclic

Question 31

Rates of fire for M249

Answer 31

Sustained: 50 rpm Rapid: 100 rpm Cyclic: 850 rpm

Question 32

Rates of fire for M240?

Answer 32

Sustained: 100 rpm Rapid: 200 rpm Cyclic: 650-950 rpm

Question 33

What is a sector of fire assigned to?

Answer 33

An individual, a weapon, or a unit

Question 34

What is a secondary sector of fire?

Answer 34

A different sector fired from the same gun position as the primary.

Question 35

What are final protective fires?

Answer 35

The plan to setup a wall of fire as a last ditch defensive effort.

Question 36

What is a final protective line?

Answer 36

Grazing fire in a straight line designed to stop an assault.

Question 37

What is the maximum graxin fire range?

Answer 37

600m

Question 38

What is deadspace?

Answer 38

Gaps in the line of grazing fire

Question 39

What are fire control measures?

Answer 39

Predetermined targets including the FPL and the PDF

Question 40

How many minutes of angle in 1 mil?

Answer 40

3.5

Question 41

What are the two types of range cards for machine guns?

Answer 41

FPL | PDF

Question 42

What is the DA for a range card?

Answer 42

DA Form 5517-R