No they do/did not the same job. An APC just cannot do the job an IFV can do. You totally missed the point I tried to make when talking about armament.
You keep going on about armament, but you've completely forgotten that the APC and the INFANTRY FIGHTING VEHICLE's share the same primary role is: to carry infantry to protect the tanks's against enemy infantry.
You are obsessed byt the IFV's ability to attack other tanks and IFV. While this is important, a dedicted gun platform can do it as well or better. An IFV is to carry infantry to counter enemy infantry and provide fire support.
How is this different from the role spelt out in the 60's for APC?
It is right that in the past and now there are/were countries where APC accompanied tanks. This is due to not being able to give the troops an IFV or due to different doctrines (Israelis for example).
I am describing the APC's role BEFORE the arrival of the IFV.
You keep talking about APC vs IFV TODAY.
This is where you and I have a misunderstanding.
But that you accompany tanks with infantry in APCs doesn't mean that they are used in the same way like IFVs simply due to the fact that they cannot do it.
With an APC you cannot really attack enemy forces during a mech battle.
Who says a Mech force with APC will always meet another Mech force?
In Vietnam, the Allied armour were often used to counter enemy infantry.
In 1973 Yom Kippur War, those IDF Mech Force that went to battle without their infantry protection were slaughtered by Egyptian infantry heavily armed with lots of PRG and Sagger.
The APC exists to enable the infantry to protect the tanks against enemy infantry, not to protect the tanks against enemy AFV, the tanks can do that themselves. So your emphasis on armament, while important, is not primary to the existence of armoured troop carriers within armoured formations.
You just lack the weapons, range and optics (And in newer days the FCS) do do this.
Whther they do that with a 20mm chain gun or a 50cal is not something the troops on the ground gets to choose. You fight with what you have.
So they really just carry the infantry until the fast mechanized phase of the battle ends and the infantry dismounts.
With all due respect that is a very narrow view and very limited thinking.
Wouldn't you say that where the APC stop moving forward is a decision made on the battlefield and not on a piece of "doctrine" paper?
If you are an APC with a 50cal - tough luck - there will be no doctrine to say you can retreat to a safe place if you are in the IDF or even the SAF.
From then on they can accompany the infantry and while they are able to provide some fire support against enemy infantry most APCs lack the armor to take much enemy fire.
This is why the IFV was developed to REPLACE the APC.
I am not saying BRING THE APC BACK.I am saying the APC was all people had back then and even now.
- APCs mostly lack the armor which enables them to take enemy fire like IFVs are intended to do. HAPCs are something different.
- APCs lack the armament, range, optics and FCS to even come close to covering a wide range of targets. They are virtually limited to attacking infantry and light cover/vehicles.
- The role of an IPC in a mechanized battle shrinks to a passive role while an IFV actively participates in a mech battle. This is the most important difference.
Not everyone is the US Army or the Bundeswehr.
And again, I am NOT saying the APC is better than the IFV. I may have to repeat this 1,000 times but I am not saying the APC is better. I am saying that in the old days and in some poorer armies today that's all you have.
But what you and Kato is impying: that the APC will retreat after dropping off its infantry load, is pure fantasy. Maybe that's how you do it in your countries but that's not how it is here and many other parts of the world.
Not only will it be a serious blow to morale for the dismounted troopers to have your only big gun and protection retreat in the midst of a fight, leaving you... it is also gonna create a corresponding rise in morale in the enemy to see that you have such cowardly tankers.
Furthermore, with everything moving forward in the confusion of a battlefield, and then suddenly your APC is moving in the OPPOSITE direction, it will create a SERIOUS traffic jam. Not every battlefied is the wide open plains of Russia or deserts of Iraq.
In all the Israel battles, the APC retreating as SOP (Standard Operation Procedure) was simply unheard. Trucks do that, APC do not.
Even the atacking Egyptian columns of Yom Kippur had APCs and many were lost to tank fire. But hey, war is hell. How else do you expect dimounted infantry to reach enemy lines along with the charging tanks.
Your description of the APC's role would take us back to to WW1.
With all due respect, sir.