OP Flashcards
What is the aim of fire discipline?
To ensure that in response to fire orders the appropriate action is taken at the guns strictly in accordance with the intention of the originator and with the minimum of delay.
What is the standard interval between firing of guns on the order “BATTERY RIGHT/LEFT”?
5 seconds.
Why are fire orders given in a specific sequence?
To minimize delay and to ensure that mistakes or omissions are readily detected.
List the methods by which an interval may be cancelled.
a. Cancel interval.
b. New interval.
c. A new order for FFE.
By what methods may an observer send the target location in his initial call for fire? Give an example of each.
a. Grid reference 123 987 b. Target number or known point CS 1230 c. Reference to a target number or know point FROM CS 1234, DIR 1220, RIGHT 400, DROP 200 d. Polar coordinates DIRECTION 3170, DISTANCE 2800
What elements should be included in the description of target from the observer?
a. Target type.
b. Degree of protection.
c. Size.
d. Target activity.
What is the interval for “Battery Right/Left”? How can this be changed?
a. Five seconds.
b. Order a new one.
What will the method of fire and control element of the observer’s orders indicate?
a. Whether adjustment will be done.
b. Method of fire for effect.
c. Time of delivery of fire.
“FIRE MISSION” is normally coupled with the number of guns or the size of the fire unit to engage the target. If the observer does not name the specific fire unit to be used, who will designate the guns to engage and what will this be based on.
a. RCPO or GPO; and
b. Based on target description and number of guns available.
Is a bad ram reported to the observer? If so, why? If not, why?
a. Yes.
b. Because the round could land several hundred metres short.
What order may the observer use to control the time of delivery of fire?
a. At my command.
b. TOT coupled with a timing.
What are the stages of a fire mission?
a. Initial call for fire is sent.
b. Adjustment if necessary.
c. FFE is opened, adjusted if necessary.
d. Record target if necessary.
e. Terminate the mission.
List the basic elements of a call for fire.
a. Observer Identification
b. Warning Order
c. Location of Target
d. Description of Target
e. Method of Engagement
f. Method of Fire and Control
What special procedures or considerations are to be done with an air OP?
a. Report SPLASH.
b. If no direction ordered use GT.
To avoid delay, the GPO may change the adjusting gun without reference to the OP except on five occasions. What are they?
a. The OP has ordered the adjusted gun.
b. Registration.
c. Destruction mission.
d. Danger close mission.
e. Laser point.
When the observer does not specify a type of ammunition, what type of ammunition will the observer see fired on the target?
HE Quick.
What special techniques or steps must one adopt with an air observation post?
a. Announce “SPLASH”.
b. If the observer does not mention any direction, use direction Gun-Target.
What are the special types of engagement?
a. Registration
b. Mark
c. Danger Close
d. Adjust Fire Plan and Future Engagements
e. Destruction
How would you indicate a target by polar coordinates? Give an example
By giving a “Direction” to the target and a “Distance” to the target. This may be coupled with an additional order of Up/Down or an elevation.
List the basic elements of a call for fire.
a. Observer Identification
b. Warning Order
c. Location of Target
d. Description of Target
e. Method of Engagement
f. Method of Fire and Control
What does TARGET mean and when is it used?
Used during laser adjusted fire mission.
Indicates that the new direction and distance is a new target location not a correction.
C/S 11 is engaging a target with HE Time.
What orders will he send to change the height of burst?
Normally - Up/Down, e.g., “Up 40”.
May – Lengthen/Shorten, e.g., “Short 1.0”
How may the location of a target be indicated? Give an example of each
a. Grid reference,
i. e., GRID 482 642 ALT 125’.
b. Target number or known point,
i. e., ZP 1242 or Registration Point 1.
c. By reference from a known point, using a direction, target grid correction and an alteration in altitude,
i. e., From CS 1234, Direction 1220, Right 200, Drop 200, Up 20.
d. Polar coordinates,
i. e., Direction 3170, Distance 2800, Down 25.
What information should be included in target descriptions? Give an example of a complete target description.
a. Target Type
b. Degree of Protection
c. Size
d. Activity
Example: 12 Trucks in woods radius 200
During a fire mission, the GPO reports “CRESTED LOW ANGLE”. What order can you give so that you may continue engaging the target?
High Angle
If you have sent the order “LEFT 120” and suddenly realize it should be “RIGHT 120”, how do you correct this error? (Show the order you would send.)
CHECK FIRING
Cancel LEFT 120
RIGHT 120
Cancel CHECK FIRING
How does the observer indicate he will adjust with HE Quick and fire the fuze PROX in effect?
PROX in Effect
What report would you make to the assistant that the burst was not observed?
Lost
How would a change in interval only be ordered?
a. By the order “CANCEL INTERVAL”.
b. By ordering a new interval, e.g., “one zero seconds”.
c. By a new order of fire for effect.
Given the following scenario, what type of engagement would your send in your initial orders?
Engage a bunker with a vital CP. You have a battery of 155mm.
Destruction
Given the following scenario, what type of engagement would your send in your initial orders?
You need accurate fire from your guns and no survey or met is available.
Registration, Laser point
Given the following scenario, what type of engagement would your send in your initial orders?
You are with a combat team and the commander tells you that an F-18 is about to engage the main objective
Mark
Given the following scenario, what type of engagement would your send in your initial orders?
You are in a defensive position and a tank platoon is approaching your position. The enemy stops in a gully 300m from your forward troops.
Danger Close
You engage in a fire mission with three guns and you want to see the guns fire successively. What will be your method?
3 GUNS BTY RIGHT A/F, or
BTY RIGHT 1 RD FFE
When can’t the order “CANCEL” be used?
When a fire order contains a quantity or a type of ammunition.
You are adjusting the height of burst for a PROX fuze, how will you send the correction to the CP?
Lengthen/Shorten (when all round impact to the ground – shorten 1.0)