The U.S. Army Could Revolutionize Long-Range Fires
In kick-starting its efforts to prepare for future high-end conflicts, late last year the U.S. Army identified six modernization priorities: Long-Range Precision Fires, Next Generation Combat Vehicles, Future Vertical Lift, the Network, Air and Missile Defense and Soldier Lethality. To support this plan, the Army stood up Cross-Functional Teams (CFTs) for each of these areas focused on speeding up the process of developing requirements and ensuring that the programs in each of these areas are achievable, affordable and effective. The bulk of the Army’s Science and Technology resources were refocused on these six priorities.
But not all priorities are equal. In recent testimony before the Senate Armed Services Committee, Army Secretary Mark Esper revealed that Long-Range Precision Fires (LRPF) is his service’s top priority. The criticality of LRPF to the future of the Army’s future ability to dominate in a high-end conflict was made clear by Brigadier General Stephen Maranian, the leader of the CFT for long-range fires:
The Army has got to modernize our surface-to-surface fire capabilities at echelon to guarantee that we have clear overmatch in the close fight, in the deep fight, in the strategic fight. If we are unable to do that we will not be able to do for the joint force what it is that surface-to-surface fires do; which is to open those windows of opportunities to allow our joint and Army aviation forces to exploit deep.
Creating overmatch in long-range fire is about more than merely increasing the range of artillery and surface-to-surface rockets and missiles. Dr. Thomas Russell, Deputy Assistant Secretary of the Army for Research and Technology, defined the key elements of a plan for LRPF: “The Army’s top modernization priority is to regain dominance in artillery and missile system range, lethality, and target acquisition with respect to strategic competitors.” Success in these areas could well return the artillery to its erstwhile status of queen of the battlefield.
Currently, the Army has a multi-phased program designed to first improve and then transform the capabilities of its artillery, rocket and missile systems. The need for volume fires, particularly in the close battle, makes it vitally important to modernize the Army’s artillery systems.
In the near-term, this means increasing the supply of precision rounds such as Excalibur and providing jamming-resistant precision-guidance kits for 155 mm artillery projectiles. It also requires the rapid completion of the program to upgrade the Army’s fleet of Paladin self-propelled howitzers.
The Army should consider ways of expanding its inventory of mobile artillery tubes, regardless of what kinds of rounds they fire. One option is to equip infantry and Stryker brigade combat teams with the Hawkeye, a version of the widely deployed Humvee, carrying a modified version of the M20 105 mm howitzer designed by the Mandus Group.
The Army hopes that by the early 2020s it can substantially increase both the range and lethality of tube artillery with the Extended Range Cannon Artillery (ERCA) program involving the Army’s Picatinny and Watervliet Arsenals. ERCA involves both a new projectile, the rocket-assisted XM1113 and a longer barrel for existing 155mm artillery pieces.
Together these improvements could increase the system’s range to as much as 70 km. The Navy has a program, the Multi Service-Standard Guided Projectile (MS-SGP), which is expected to extend the range of five-inch naval guns and Army and Marine Corps 155 mm howitzers out to a range similar to that of the ERCA.
For the longer-term, the Army is looking at the possibilities for land-based extremely high-velocity artillery systems. There are several paths being explored including hypervelocity or ramjet rounds fired from ERCA artillery or a rail gun. Not only would such systems fire shells out to ranges of 100 km or more, but their high velocities also make them potential candidates for engaging air-breathing and even short-range ballistic targets.
With respect to guided rockets and missiles in the near-term, the Army is seeking an extended range variant of its currently deployed, highly effective Guided Multiple Launch Rocket System (GMLRS) that would provide an area strike capability out to 150 km. This would cover some of the targets now the responsibility of the Army Tactical Missile System (ATACMS) which has a range of up to 300 km. The Army is considering upgrading the ATACMS with a new seeker and warhead thereby expanding its capabilities to include a land-based anti-ship capability.
Finally, the Army has initiated the Precision Strike Missile (PRSM) program as a longer-range replacement for the ATACMS. The desire is for a missile smaller than the ATACMs so that two can be carried in a single GMLRS launch cell but with a range approaching 500 km and a precision targeting capability.
The Army is currently planning to test prototype PRSMs designed by Raytheon and Lockheed Martin in 2019 with plans to deploy an initial version in the mid-2020s. There have been suggestions that a PRSM program also will look at longer-range options, so-called strategic fires, in the event the U.S. withdraws from the Intermediate-Range Nuclear Forces Treaty.
An issue the Army needs to address is the high-quality targeting information needed by these new long-range, precision strike systems. The Air Force wants to cancel the Joint Surveillance Targeting Attack Radar replacement program. Neither the Air Force nor the Army has an unmanned aerial vehicle that can survive in a high threat air defense environment. It makes no sense to develop long-range fires that can strike deep if the Army cannot see that far.
The Army vision for LRPF would fundamentally transform land-based fires and counter Russian and Chinese efforts to achieve dominance in indirect fires. The question is how rapidly the Army can implement this vision. While the CFT is suggesting that new capabilities could be rolled out in as little as five years, the Army is only asking for $1.6 billion over the Future Years Defense Program for its number one modernization priority, well below the amounts requested for next-generation combat vehicles or improvements to the network. One way to save money is by speeding up the acquisition process.
Daniel Gouré, Ph.D., is a vice president at the public-policy research think tank Lexington Institute. Goure has a background in the public sector and U.S. federal government, most recently serving as a member of the 2001 Department of Defense Transition Team. You can follow him on Twitter at @dgoure and the Lexington Institute @LexNextDC. Read his full bio here.