Principles of Fire Support Flashcards
What makes up a mortar section?
3 60mm/M224
How can a M224/60mm be fired?
Crop fire mode (conventional method)
Trigger fire mode (conventional or hand-held method)
How many Marines are in a 60mm mortar section?
10 Marines
1-Section Leader
3-Squads each with 3 Marines (Squad Leader, Assistant Gunner, & Ammo man)
What is the max range of the M224/60mm?
3,500m
What is the ECR of the M224/60mm?
30m
What is the minimum range of the M224/60mm?
70m
What are the rates of fire for the M224/60mm?
Max (4 mins) = 30 rds per min
Sust (indef) = 20 rds per min
What is the max range for the M252/81mm?
5,700m
What is the ECR for the M252/81mm?
35m
What is the minimum range for the M252/81mm?
83m
What are the rates of fire for the M252/81mm?
Max (2 min) = 30 rds per min
Sust (indef) = 15 rds per min
What is the max range for the M327/120mm?
8,135m
What is the ECR for the M327/120mm?
45m
What are some mortar capabilities?
- High volume of fire
- Highly responsive asset
- Light, mobile, & flexible
- Fires from & into defilade
- CO’s ‘hip pocket artillery’
What are some mortar limitations?
- Long time of flight
- Ammo consumption
- Multiple displacements
- Range
What is the mission of the Marine Corps artillery?
Integrate & deliver lethal & non-letha fires to enable joint & maneuver commanders to dominate their operational environment across the spectrum of operations.
What are artillery’s 3 key tasks to accomplish their mission?
- Provide close & continuous fire support to the maneuver units. Provided day/night & in all weathers.
- Gives depth to the battlefield.
- Deliver counter fire within the range of our weapon systems to ensure freedom of movement for ground forces.
What is the range of the XM777A2/155mm?
18,100m
30,100m with rocket assisted projectile (RAP)
What is the max rate of fire of the XM777A2/155mm?
5 rds per min (3 mins)
What is the sustained rate of fire for the XM777A2/155mm?
2 rounds per min (indef)
What is the range of the HIMARS?
30,000m
What ammo does the HIMARS use?
M31 HE (PD or Delay fuze) (GPS) (15-70km) M48 ATACMS (70-300km)
What does an artillery battalion consist of?
1 Headquarters Battery
3 Firing Batteries (6 howitzers in ea batter, 18 in the Bn)
What are the different artillery regiments?
10th Marines w/2d MARDIV
11th Marines w/1st MARDIV
12th Marines w/3d MARDIV
14th Marines w/4th MARDIV
What consists of a firing team?
The observer (eyes) The FDC (Brain) The Howitzer section (muscle)
What are some artillery capabilities?
- Maneuvering fires
- Massing fires
- Surprise fires
- All weather capability
- Fires from & into defilade
- Rapid displacement
What are some artillery limitations?
- Reduced effectiveness
- Poor terrain
- Close combat
- Air attack
- Ammo burden/logistics
- Inability to support initial phase of amphibious operation
- Comm
- Counter battery radar
What are the different projectiles for 60mm?
HE (high explosive)
WP (white phosphorus)
Illum (40 sec)
IR Illum
What are the different projectiles for 81mm?
HE (high explosive)
WP (white phosphorus)
Illum (60 sec)
IR Illum
What are the different projectiles for 120mm?
HE (high explosive)
WP (white phosphorus)
Illum (120 sec)
IR Illum
What are the different projectiles for 155mm?
HE (high explosive) WP (white phosphorus) Illum (120 sec) IR Illum M825 Smoke (WP) HE/RAP Improvised Conventional Munition (ICM)
What are the different fuzes for 60mm?
Point Detonating (PD) or Quick (Q)
Delay (D)
Proximity (Prox)/Near Surface Burst (NSB)
Variable Time (VT)
What are the different fuzes for 81mm?
Point Detonating (PD) or Quick (Q)
Delay (D)
Proximity (Prox)/Near Surface Burst (NSB)
Variable Time (VT)
What are the different fuzes for 120mm?
Point Detonating (PD) or Quick (Q)
Delay (D)
Time
What are the different fuzes for 155mm?
Point Detonating (PD) or Quick (Q)
Delay (D)
Variable Time (VT)
Time
