I’ve
previously discussed amphibious assaults and stated that I consider the need
for such assaults to be extremely unlikely under any foreseeable strategy. Sure, there could be the odd small scale raid
or diversionary feint but there just is no need for large scale assaults.
However,
the Marine Corps insists that such a capability is needed so let’s address what
I consider the most likely amphibious assault scenario: a port seizure. The Marines refuse to discuss it or even
consider the possibility so we’ll do it for them.
Short
of a massive, multi-year buildup there is just no possibility of logistically
sustaining a sizable invasion across a beach.
That only leaves the option of seizing an existing port to support the
unloading of cargo ships at a rate sufficient to sustain a major invasion. The astute historian will note that this is
exactly what the objective of the WWII Normandy D-Day assault was. Since all ports are associated with city
structures and infrastructures, the roads leading to and from the port will
prove every bit as critically important for quickly dispersing the unloaded
supplies as the port itself.
Here
are the main aspects of an amphibious port seizure and the more detailed points
associated with them.
Initial Seizure
Port
– The port, itself, must be seized, obviously.
The key is to seize it as quickly as possible, to minimize the time the
defenders have to destroy the facilities such as cranes, piers, docks, ramps,
and warehouses. The best method of
seizure is an initial airborne assault to quickly place infantry in and around
the port to seize the facilities.
Simultaneous with the airborne assault must be an amphibious assault
with heavier weapons, artillery, and armor to relieve the airborne troops and
secure and defend the port.
Roads
– Airborne troops should also be used to seize key roads leading in and out of
the port so as to prevent immediate counterattack. As with the port, additional amphibious
troops will be required to relieve the airborne troops and secure and defend
the roads.
Warships
– It will be necessary to operate warships in the closed and congested waters
of the harbor/port to provide cruise and ballistic missile defense, gun
support, and counterbattery fire. This
is completely contrary to current Navy doctrine and will require new doctrine
and tactics.
Mine
clearance – It is hard to imagine that any modern port will not be heavily
defended with mines. Given that speed is
the key to successful assaults, in general, and seizure of an, at least,
semi-functioning port, mine clearance must be accomplished extremely rapidly to
allow warships, supply ships, transports, and repair vessels access to the
port. For example, the WWII D-Day assault
involved hundreds of minesweepers to achieve the necessary clearance in a
combat-useful time frame. Currently, we
utterly lack the capability to perform this chore.
Holding/Defending
C-RAM
(Counter-Rocket, Artillery, and Mortar) – Being a known, fixed location, a
seized port will be subject to intense mortar and artillery fire. Mobility, the mantra of modern militaries and
the presumed solution to mortar and artillery fire, does not apply to seizing
and holding a port. Our forces will be
static and fixed. Uh, oh! That’s an operational and doctrinal
oversight! C-RAM protection will be
required.
Missile
Defense – Aegis warships will be required to establish a protective missile
defense umbrella over the port. This may
be complicated by large buildings obscuring the radar view of the ships and may
require an offboard, networked sensor. However,
we currently lack a communications and network system that is proven capable of
functioning in the face of electronic and cyber countermeasures.
Road
Defense – Roads are simultaneously the avenue for enemy counterattacks and the
means of moving supplies out to the main invasion effort. Defending the road system, especially early
on, will be manpower (infantry) intensive and require large quantities of armor
for mobile defense.
Repairs and
Rebuilding
Barring
some incredibly good luck, the enemy will likely destroy the port facilities to
a very large degree. We will need to
rebuild most of the facilities. We will
need the ability to unload with only minimal port support while repairs are
on-going. We will need to rebuild under
fire. Who will do this? How will they be protected? What equipment is needed? Are we trained to rebuild port facilities
while under fire (hint: we aren’t)?
Loading/Unloading
Operations Under Fire
Since
the port’s cranes will have likely been destroyed, we’ll need ships with their
own large cranes as a stopgap unloading measure until we can rebuild facilities. A dedicated crane ship or two would also come
in very handy. We’ll also need large
numbers of fork lifts, trucks, etc. for quickly moving the unloaded supplies
out and to the invasion force.
Initially, all of this will occur while under fire. Are we prepared and trained to unload and
disperse supplies while under fire? Are
we prepared to disperse supplies very quickly so as to avoid the buildup of
large stockpiles (meaning very attractive targets)?
Dispersal
The
key, and the entire point, to seizing and using a port is the ability to
quickly disperse incoming, unloaded supplies out to the main invasion
force. The dispersal (meaning transport
of supplies) will be complicated by the fact that there will only be one or two
routes and those routes will be known to the enemy and, thus, subject to
continual attack. Are we prepared to fight
our supply convoys through? Do we have
the necessary doctrine to secure roads, establish defended zones around the
roads, and protect convoys? Are we mentally
prepared to inflict the degree of collateral damage on the surrounding areas
that will be required to clear them of enemy forces? Ironically, improvised explosive devices
(IEDs) and mines, the bane of our Iraq/Afg efforts, will be a non-threat in
this scenario since, presumably, we’ll kill anyone/anything even remotely
approaching the transport roads – unless, you know, we try to fight a
zero-casualty, zero-collateral damage type of war which would be incredibly
stupid but is exactly what we’ve done in Iraq/Afg.
Summary
Other
than for occasional small scale raids, over the beach assaults are neither
feasible nor operationally warranted.
Port seizure, however, is mandatory.
There is simply no other way to logistically supply a modern, major
assault force with the required volume and tonnage of supplies. I believe that this is, or should be, the
Marine’s core mission.
It
is obvious from the preceding discussion that port seizure requires a specific
and specialized force with specialized equipment, doctrine, and tactics –
almost none of which exists, today. Being
amphibious, the Marines are ideally situated to provide much of this capability
although it would require a complete rethinking of their purpose and a complete
rebuilding of their force structure.
The
issue of airborne troops, alone, is an interesting one. Would these troops come from the Marines or
from existing Army units? Would the
preferred airborne delivery be parachuting or helo insertion? These are the kinds of questions that need to
be explored in realistic exercises.
Unfortunately, to the best of my knowledge, there has never been a port
seizure exercise by the US military in recent decades.
If
port seizure is as important as I believe it to be then we need to begin
developing the force necessary to do it.
If one would argue that port seizure is not important then I need to
hear how we’ll logistically support a major invasion force.