Chris Pook said:
Can the Expert Corps then guarantee that they will then supply a platoon sized permanent attachment of their Corps to each infantry battalion that the Bn CO can employ as he/she sees fit?
Because that is the flexibility that has been lost. Mortar platoon, Pnr Platoon, ATGM platoon - all could be employed as just another platoon when the situation demanded it.
I dont know what the obsession is in this thread for the infantry to have GBAD weapons, but it is completely impractical.
First, keeping the weapons integral to an Inf Bn minimizes their flexibility in relation to the overall battle. With this logic, the armour, field artillery, engineers, logistics, etc would all need their own AD weapons. When one does a Criticality, Recuperability, Vulnerability (CVR) analysis, infantry is generally the lowest priority since it is the most survivable and recuperable of the assets. Therein, dependent on the air threat, the priority is normally with Artillery, MLRS/HIMARS, armour, and the BSA (logistics) rather than individual battalions or companies of infantry.
Keeping AD weapons centralized maximizes the flexibility of the brigade/div/corps commander to use them where they are deemed the most useful in a complex battlefield. If the commander wants an Inf bn to have AD protection than he has the ability to attach the weapons to the Bn Comd Direct Support. The Bn comd can then choose priorities. however, if the priority is defence of the Bde HQ and the BSA, than the inf bn commander gets briefed an AAAD and moves on. As such, this idea of giving them to Bn's as another platoon is, imho, extremely short sighted and reduces flexibility.
For the question on GBAD in a battle group. Doctrinally, this is a troop task as GBAD is not normally deployed below brigade for very good reasons listed above. The 4th could force generate a troop of GBAD to deploy to Latvia if tasked, so there's no benefit to having the inf take the task- only limitations.
Further, the concept of coordination was mentioned by flavius earlier. ACMs such as SAAFRs are considered to be procedural airspace control while the Air Defence Systems Integrator (ADSI) provides positive control (near real time +/- 5 seconds radar IFF feed of all aircraft via multiple sensors (AWACs, J-STAR, naval radars, ground radars). how would an Inf Bn receive the ACMs, monitor them, and update them? In Afghanistan the ATO was literally thousands of lines long. There is no reasonable way that an Inf Bn trying to monitor a battle could also provide the C2 to monitor airspace in a procedural environment. In a positive environment, who is monitoring the ADSI? The Infantry going to learn about tactical data links? Not to mention how they would plan on getting links into a mobile HQ forward deployed.
The concept of AD in Inf Bn's isn't workable nor desirable.