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Nomenclature+ for MGs on Tanks


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Hello:

1. Coming from ASL so know them as bow-mounted, coaxial, and anti-aircraft MGs. Wondering are there more proper military terms?

2. Neat experience yesterday going through Raff Campaign. I could only see 2 MGs on a Sherman. Then I zoomed in, and they were firing the coaxial MG. Just seems to stick out a little from the turret. Cool beans.

3. Is the firing of the anti-aircraft and coaxial one mutually exclusive.

Thanks,

Gerry

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Depends on the AA mount. Some Shermans mount the AAMG behind the commander so it is impractical for use in the ground role. Others place it so it is accessible to the vehicle commander, so Coax and AAMGs can be fired simultaneously. On a Sherman the AAMG is always a .50 cal HMG

The Sherman also has a bow machine gun mounted through the glacis plate of the vehicle (in the bow, hence bow machine gun) which is operated by the radio operator alongside the driver. As such, as long as the target is in the front arc, this can fire too.

The Coax and the bow MG are both .30cal

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1. Bow Co-ax and AA are the correct terms.

2. Although there are 2 to 3 MG's on a WW2 tank the bow gun will generally be just a simple ball mount but the Co-ax is usually linked to the gunner sighting system and has a longer range and higher firepower.

3. As stated many AA MG's cannot really be used to attack ground targets and in some cases leave the firer very exposed if they do so. Not 100% sure but it does seem the AAMG on some German tanks is usually dismounted, (carried inside the tank?) as it is rare to see a picture with an MG on the cupola but most "technical" drawings show an MG.

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Shermans with the split commander's hatch had a rotating ring that the hatch was built into and that held the MG mount, so the MG could be rotated to any position. Later, when they went to a one piece commander's cupola, the MG was mounded on a fixed pedestal on the turret top. Sometimes there was a pedestal aft, sometimes two including one forward of the commanders hatch.

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Maybe we should think too about whether it was a good idea to fire the AAMG.

Even the one in front of the commanders hatch requires a fair bit of your bod outside the tank, akin to sticking your head over the top of a wall really, which is a good way to get it shot off. You are also 3 metres in the air so a fairly obvious target and an easy way to suppress/KO the tank.

To use an ASL term, definitely "Hazardous Movement"

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From wargames, people frequently have the impression that several MGs on the same tank double or triple its firepower. This isn't really the case. Mostly they just deal with different covered arcs. By far the most effective MG on any tank is the coaxial. It has turret tracking with a dedicated high power optic and excellent stabilization. This makes it a far more accurate weapon than any of the other MG mount types. Anything the coaxial can hose down it going to be showered with bullets and it won't matter a darn whether another MG is firing at the same area too, or not.

The only real exception to this is 50 cal flexibles against modestly tough cover, where the rifle-caliber 30s might not penetrate. But 50 cal penetration of cover does come at a pretty steep price - very limited ammo. The rounds are much heavier, and loaded in an external box that was not exactly easy to reload in action. The internally supplied coaxial had 15 to 20 times the ammo load.

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The Sherman also has a bow machine gun mounted through the glacis plate of the vehicle (in the bow, hence bow machine gun) which is operated by the radio operator alongside the driver. As such, as long as the target is in the front arc, this can fire too.

As long as the tank is not hull down or otherwise has an obstruction to the front high enough to block LOS/LOF.

Michael

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2. Although there are 2 to 3 MG's on a WW2 tank the bow gun will generally be just a simple ball mount but the Co-ax is usually linked to the gunner sighting system and has a longer range and higher firepower.

Agree on all points except the last. The coax is more accurate due to the sighting system and may well have a longer range due to being mounted higher on the tank, but as both guns were Browning .30 cal, would have had the same ROF, used the same ammunition, etc.

Michael

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Yes, I see the coax doing a lot of whacking in CMN, even in the lowly M8 recon car. Handy it was and is, the coax. And our friend the Maus even had a 75mm gun for a coax, taking a good thing to the supremely over the top extreme. Maybe our uberpanzer buddies can get to play with one in some later module.

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Agree on all points except the last. The coax is more accurate due to the sighting system and may well have a longer range due to being mounted higher on the tank, but as both guns were Browning .30 cal, would have had the same ROF, used the same ammunition, etc.

Sure on US tanks but I am talking in the generic here, in general the Co-Ax has better ammo feed, sights and all that sort of thing, in some cases the co-ax is a heavier MG as well, like the BESA on British tanks

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Where British Tanks mounted a BESA, I think that the bow mount was also a BESA. Considering that it's a different calibre to all other British small arms, having two different .30cal-ish link ammunitions in one tank would be somewhat confusing. Even WW2 British tank design wasn't that disjointed. Except when they also had a Bren on a pintel mount.

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Maybe we should think too about whether it was a good idea to fire the AAMG.

Even the one in front of the commanders hatch requires a fair bit of your bod outside the tank, akin to sticking your head over the top of a wall really, which is a good way to get it shot off. You are also 3 metres in the air so a fairly obvious target and an easy way to suppress/KO the tank.

To use an ASL term, definitely "Hazardous Movement"

I had a recent encounter where the TC after receiving a glancing hit from an AT gun immediately grabbed the .50 and started scanning for targets. The next round killed him. Would've been better off dropping down into the turret.

For those who care, this was a friend of "George the tanker".

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I suspect that may have happened to more than one tanker in real life. You severely reduce your situational awareness when you drop into that turret and that .50 may seem as big as a cannon, particularly if you are not too battle-wise yet. It might just be tempting to stay out there and try to take the SOB on yourself. I'm personally glad that the game randomizes such behavior to some extent because it makes the pixeltruppen all that much more unpredictable and human-like. After all, humans do stupid things aplenty too.

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Cool video, I was surprised to see that the BESA was actually mounted and sighted independently from the main gun.

flamingknives: Yes you are right, in most cases I have found they were the same all around, the A9 however did have a 303 lewis and a 7.92 BESA, ironically the BESA being mounted in the hull but with the better sights etc.

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