for the cannon shooters

This thread need some visuals.

[ame]https://www.youtube.com/watch?v=aAd5SO22ivo[/ame]

[ame]https://www.youtube.com/watch?v=uvZS63Osons[/ame]

[ame]https://www.youtube.com/watch?v=is5x-lIA9mY[/ame]
 
There's an Old Army saying about The King of Battle: "There are few problems that can't be solved by an artillery barrage!"

Bob
 
Okay this is a little complicated. When the cannon is in place its exact position relative to the North Pole is plotted. The exact angle of the cannon tube relative to Polar North is also plotted. For the purposes of our discussion that angle become zero.

It actually takes two sights to aim a cannon one sight is for deflection plus or minus from 0. To aim the Cannon for that you look through an optic sight with essentially a crosshairs at a fixed aiming Point called the collimator. Which also has a numbered cross hair on it.

So FDC give you a reflection 0 + 15 ( that's not actually how they read the deflection but I'm simplifying things) so the Gunner on the Canon adjust his sight - 0 + 15 and then as he's looking through the site which is moved away from the collimator to move the entire cannon Tube until the sight lines back up on the zero on the collimator. At that point the cannon is laid for deflecti
The elevation setting is essentially a level. FDC gives the assistant gunner a quadrant of elevation say 435. The assistant Gunner simply adjust his sight quadrant to 435 nd raises the tube until the bubble levels.

At that point the gunner makes any fine adjustments for deflection

Once the Gunners site is at zero on the collimator and the assistant Gunner sight is level that whatever quadrant he was given the cannon is aimed and ready to fire.


Once all cannons report loaded and ready to fire after FDC gives the command for everyone to fire at once.

Man I'm glad I was a Grunt. That's way too much stuff to figure out
 
What you non-cannoneers gotta know...

.....Is that the gunners are not looking at the actual target in their scopes. They are looking at a reference marker in the gun pit. The deflection is set off on the scope and then the whole thing is turned back until the scope's recticle is back on the reference marker (called a 'Collimater'). The gun crew rarely gets to see the target. The elevation is set by a level vial device called a quadrant.


That's the downside. The upside is that the gunners are able to shoot just as accurately in the rain at 0300 in the morning, as they can in the daylight. I still hate the word "monsoon".

When I was with IFFV we had three manoeuvre battalions, and 17 artillery battalions. If you screwed with us, we'd blow you off the face of the earth.
 
Enjoyed reading the posts. Check out these pictures from the Korean War - 1951. 780th Field Artillery Battalion, B Battery. 8" towed howitzers. One picture is during firing - the gunner in the foreground is pulling the lanyard . My dad's gun and crew. Very accurate artillery pieces. I believe they could throw a 200 lb shell about 20 miles. You can see the size of the shell in one of the pictures.

There is an interesting story about how the 780th mounted an 8" Tube on a tracked chasis and took it up a winding mountain road in the winter so they could have direct fire at a Chinese bunker complex on an adjoining ridge. Blew the hell out of it!
 

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Yawl are bring back old memories of 1966 Ft. Sill crew training on the Howitzer. I remember the "stick" in the gun pit, the fuzes and battery firing, and the hectic activity around loading, setting, firing, etc. but the part about actually assembling the round is fuzzy after all these years, but as I recall (may not be accurate cause I was changed by a PFC at receiving station to rifleman....never saw arty again in any official capacity) the gun crew leader after receiving mission instructions over the field line, would literally "yell out" numbers and they had a very distinct "order", and if I also recall there was one for the "charge" (example "charge 4), which meant you grabbed 4 bags of powder and placed them in the primed empty brass, while another crew member was Setting" the fuse on top of the actual round, then the "loader would get handed the fully assembled live round, and he shoved it onto the loading tray, up into the breech, while the "gunner" had his hand on the lanyard.

Like I said before in this post, I thought it was complicated, but if done right to the letter..........very effective. We really didn't have time to think about kill radius, or deflection....those things were figured out between the FO and the battery commander....but us grunts just did our job, and soldiered on....I also remember fingers going up (no....not just a certain one) after the first round on the way because none of us could hear ****...and nothing worse for downrange friendlies than a powder loader who "short-bagged" a round by missing the charge number which set the distance range the gun would fire. In training they intentionally had one gun in the battery "short-bag" sometimes to be sure that the loaders were watching their crew leader, and not an adjacent gun, and to give the FO's also in training the experience of seeing their call in's go wrong. A lot of "choice words and gestures" would follow during those "tests".
 
Yawl are bring back old memories of 1966 Ft. Sill crew training on the Howitzer. I remember the "stick" in the gun pit, the fuzes and battery firing, and the hectic activity around loading, setting, firing, etc. but the part about actually assembling the round is fuzzy after all these years, but as I recall (may not be accurate cause I was changed by a PFC at receiving station to rifleman....never saw arty again in any official capacity) the gun crew leader after receiving mission instructions over the field line, would literally "yell out" numbers and they had a very distinct "order", and if I also recall there was one for the "charge" (example "charge 4), which meant you grabbed 4 bags of powder and placed them in the primed empty brass, while another crew member was Setting" the fuse on top of the actual round, then the "loader would get handed the fully assembled live round, and he shoved it onto the loading tray, up into the breech, while the "gunner" had his hand on the lanyard.

Like I said before in this post, I thought it was complicated, but if done right to the letter..........very effective. We really didn't have time to think about kill radius, or deflection....those things were figured out between the FO and the battery commander....but us grunts just did our job, and soldiered on....I also remember fingers going up (no....not just a certain one) after the first round on the way because none of us could hear ****...and nothing worse for downrange friendlies than a powder loader who "short-bagged" a round by missing the charge number which set the distance range the gun would fire. In training they intentionally had one gun in the battery "short-bag" sometimes to be sure that the loaders were watching their crew leader, and not an adjacent gun, and to give the FO's also in training the experience of seeing their call in's go wrong. A lot of "choice words and gestures" would follow during those "tests".

Your memory is close enough for government work. I will say though that every unit I was in the section chief was personally responsible to visually verify every component before the gun was fired.

When I was a number 2 man ( the guy that actually fired) on an M110A2 SP 8 inch the FDC would give us a fire mission and call out a given charge. The powder man would repeat the charge and cut it then bring it to me to load it.

He'd hand it to me and tell me what it was "Charge 7, White bag" I'd take it and double check that what I had in my hands was in fact a charge 7 WB and then hold it up for the Chief's inspection and tell him that it was "Charge 7 White bag" and he'd look and TRIPLE check that we had the right charge.

In 15 years the only time any section I was in ever "shot out" was once in Germany. We had the gun emplaced on hill and the carriage wasn't level so as the gun elevated it went off target.

We fired one round and it landed 70(ish) yards away from the other three rounds and FDC knew by time of impact who it was that shot it. The Platoon Sergeant came down to our gun checked our settings, put a level in the gun carriage and explained the problem to us and showed us how to correct it.
Never happened again
 
At Fort Sill, Oklahoma mid 1966 training to be an FO and prior trained on crew for 105 mm howitzer. We had the brass, then you inserted the "powder charge" which was actually hand size fabric bags of powder, at the same time the Gunner and A-Gunner were adjusting the azimuth and the optic per the FO's call in coordinates. Another crew member was "setting" the fuse on top of the actual round for whatever the mission called for (time delay, time on target, air burst, etc.).

Sounds complicated and it was but still I recall we could crank out some serious "stuff" at the rate of 3, 4 per minute.

Hearing??? WHAT DID YOU SAY???? I don't recall any hearing protection, at any time from basic in early 1966 through 1974 when I got out the second time. True even shooting competitively in 1967 for the 3rd Armored Rifle Team.

I was typical for the Army....trained Artillery at Ft. Sill. changed by the receiving clerk at first permanent duty station to 11B20 ground pounder rifleman.

At reunions or on the street, the way to spot an ex-Arty man is to just look for BOTH hearing aids....us ground pounders usually only have 1.


Yep, you beat there by 3 yrs. Artillery Survey Ft Sill 1969-70. Thats the group they got the forward observers from. The FO's go out ahead of the guns and watch where the rounds strike and call in adjustments. More than one caught shells in the hind pocket. After my extensive and costly training, I was put into the finance office. Spent 2 yrs in some hell hole .... i believe it was Italy.

Charlie
 
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