Tag Stryker combat vehicle

The Historical Combat Effectiveness of Lighter-Weight Armored Forces

A Stryker Infantry Carrier Vehicle-Dragoon fires 30 mm rounds during a live-fire demonstration at Aberdeen Proving Ground, Md., Aug. 16, 2017. Soldiers with 2nd Cavalry Regiment spent six weeks at Aberdeen testing and training on the new Stryker vehicle and a remote Javelin system, which are expected to head to Germany early next year for additional user testing. (Photo Credit: Sean Kimmons)

In 2001, The Dupuy Institute conducted a study for the U.S. Army Center for Army Analysis (CAA) on the historical effectiveness of lighter-weight armored forces. At the time, the Army had developed a requirement for an Interim Armored Vehicle (IAV), lighter and more deployable than existing M1 Abrams Main Battle Tank and the M2 Bradley Infantry Fighting Vehicle, to form the backbone of the future “Objective Force.” This program would result in development of the Stryker Infantry Fighting Vehicle.

CAA initiated the TDI study at the request of Walter W. “Don” Hollis, then the Deputy Undersecretary of the Army for Operations Research (a position that was eliminated in 2006.) TDI completed and submitted “The Historical Combat Effectiveness of Lighter-Weight Armored Forces” to CAA in August 2001. It examined the effectiveness of light and medium-weight armored forces in six scenarios:

  • Conventional conflicts against an armor supported or armor heavy force.
  • Emergency insertions against an armor supported or armor heavy force.
  • Conventional conflict against a primarily infantry force (as one might encounter in sub-Saharan Africa).
  • Emergency insertion against a primarily infantry force.
  • A small to medium insurgency (includes an insurgency that develops during a peacekeeping operation).
  • A peacekeeping operation or similar Operation Other Than War (OOTW) that has some potential for violence.

The historical data the study drew upon came from 146 cases of small-scale contingency operations; U.S. involvement in Vietnam; German counterinsurgency operations in the Balkans, 1941-1945; the Philippines Campaign, 1941-42; the Normandy Campaign, 1944; the Korean War 1950-51; the Persian Gulf War, 1990-91; and U.S. and European experiences with light and medium-weight armor in World War II.

The major conclusions of the study were:

Small Scale Contingency Operations (SSCOs)

  1. Implications for the Interim Armored Vehicle (IAV) Family of Vehicles. It would appear that existing systems (M-2 and M-3 Bradley and M-113) can fulfill most requirements. Current plans to develop an advanced LAV-type vehicle may cover almost all other shortfalls. Mine protection is a design feature that should be emphasized.
  2. Implications for the Interim Brigade Combat Team (IBCT). The need for armor in SSCOs that are not conventional or closely conventional in nature is limited and rarely approaches the requirements of a brigade-size armored force.

Insurgencies

  1. Implications for the Interim Armored Vehicle (IAV) Family of Vehicles. It would appear that existing systems (M-2 and M-3 Bradley and M-113) can fulfill most requirements. The armor threat in insurgencies is very limited until the later stages if the conflict transitions to conventional war. In either case, mine protection is a design feature that may be critical.
  2. Implications for the Interim Brigade Combat Team (IBCT). It is the nature of insurgencies that rapid deployment of armor is not essential. The armor threat in insurgencies is very limited until the later stages if the conflict transitions to a conventional war and rarely approaches the requirements of a brigade-size armored force.

Conventional Warfare

Conventional Conflict Against An Armor Supported Or Armor Heavy Force

  1. Implications for the Interim Armored Vehicle (IAV) Family of Vehicles. It may be expected that opposing heavy armor in a conventional armor versus armor engagement could significantly overmatch the IAV. In this case the primary requirement would be for a weapon system that would allow the IAV to defeat the enemy armor before it could engage the IAV.
  2. Implications for the Interim Brigade Combat Team (IBCT). The IBCT could substitute as an armored cavalry force in such a scenario.

Conventional Conflict Against A Primarily Infantry Force

  1. Implications for the Interim Armored Vehicle (IAV) Family of Vehicles. This appears to be little different from those conclusions found for the use of armor in SSCOs and Insurgencies.
  2. Implications for the Interim Brigade Combat Team (IBCT). The lack of a major armor threat will make the presence of armor useful.

Emergency Insertion Against An Armor Supported Or Armor Heavy Force

  1. Implications for the Interim Armored Vehicle (IAV) Family of Vehicles. It appears that the IAV may be of great use in an emergency insertion. However, the caveat regarding the threat of being overmatched by conventional heavy armor mentioned above should not be ignored. In this case the primary requirement would be for a weapon system that would allow the IAV to defeat the enemy armor before it could engage the IAV.
  2. Implications for the Interim Brigade Combat Team (IBCT). Although the theoretical utility of the IBCT in this scenario may be great it should be noted that The Dupuy Institute was only able to find one comparable case of such a deployment which resulted in actual conflict in US military history in the last 60 years (Korea, 1950). In this case the effect of pushing forward light tanks into the face of heavier enemy tanks was marginal.

Emergency Insertion Against A Primarily Infantry Force

  1. Implications for the Interim Armored Vehicle (IAV) Family of Vehicles. The lack of a major armor threat in this scenario will make the presence of any armor useful. However, The Dupuy Institute was unable to identify the existence of any such cases in the historical record.
  2. Implications for the Interim Brigade Combat Team (IBCT). The lack of a major armor threat will make the presence of any armor useful. However, The Dupuy Institute was unable to identify the existence of any such cases in the historical record.

Other Conclusions

Wheeled Vehicles

  1. There is little historical evidence one way or the other establishing whether wheels or tracks are the preferable feature of AFVs.

Vehicle Design

  1. In SSCOs access to a large-caliber main gun was useful for demolishing obstacles and buildings. This capability is not unique and could be replaced by AT missiles armed CFVs, IFVs and APCs.
  2. Any new lighter tank-like vehicle should make its gun system the highest priority, armor secondary and mobility and maneuverability tertiary.
  3. Mine protection should be emphasized. Mines were a major threat to all types of armor in many scenarios. In many SSCOs it was the major cause of armored vehicle losses.
  4. The robust carrying capacity offered by an APC over a tank is an advantage during many SSCOs.

Terrain Issues

  1. The use of armor in urban fighting, even in SSCOs, is still limited. The threat to armor from other armor in urban terrain during SSCOs is almost nonexistent. Most urban warfare armor needs, where armor basically serves as a support weapon, can be met with light armor (CFVs, IFVs, and APCs).
  2. Vehicle weight is sometimes a limiting factor in less developed areas. In all cases where this was a problem, there was not a corresponding armor threat. As such, in almost all cases, the missions and tasks of a tank can be fulfilled with other light armor (CFVs, IFVs, or APCs).
  3. The primary terrain problem is rivers and flooded areas. It would appear that in difficult terrain, especially heavily forested terrain (areas with lots of rainfall, like jungles), a robust river crossing capability is required.

Operational Factors

  1. Emergency insertions and delaying actions sometimes appear to be a good way to lose lots of armor for limited gain. This tends to come about due to terrain problems, enemy infiltration and bypassing, and the general confusion prevalent in such operations. The Army should be careful not to piecemeal assets when inserting valuable armor resources into a ‘hot’ situation. In many cases holding back and massing the armor for defense or counter-attack may be the better option.
  2. Transportability limitations have not been a major factor in the past for determining whether lighter or heavier armor were sent into a SSCO or a combat environment.

Casualty Sensitivity

  1. In a SSCO or insurgency, in most cases the weight and armor of the AFVs is not critical. As such, one would not expect any significant changes in losses regardless of the type of AFV used (MBT, medium-weight armor, or light armor). However, the perception that US forces are not equipped with the best-protected vehicle may cause some domestic political problems. The US government is very casualty sensitive during SSCOs. Furthermore, the current US main battle tank particularly impressive, and may help provide some additional intimidation in SSCOs.
  2. In any emergency insertion scenario or conventional war scenario, the use of lighter armor could result in higher US casualties and lesser combat effectiveness. This will certainly cause some domestic political problems and may impact army morale. However by the same token, light infantry forces, unsupported by easily deployable armor could present a worse situation.

The U.S. Army’s Stryker Conundrum

Soldiers, of the 1st Stryker Brigade Combat Team, 4th Infantry Division, tactically move a Stryker over the Mojave Desert during Decisive Action Rotation 15-10 at the National Training Center on Fort Irwin, Calif., Sept. 24, 2015. The Stryker and other ground combat vehicles are undergoing a number of upgrades, according to officials. (Photo Credit: Sgt. William Howard)

As part of an initiative to modernize the U.S. Army in the late 1990s, then-Chief of Staff General Eric Shinseki articulated a need for combat units that were more mobile and rapidly deployable than the existing heavy armor brigades. This was the genesis of the Army’s medium-weight Stryker combat vehicle and the Stryker Brigade Combat Teams (SBCTs).

Since the Stryker’s introduction in 2002, SBCTs have participated successfully in U.S. expeditionary operations in Iraq and Afghanistan, validating for many the usefulness of Shinseki’s original medium-weight armor concept. However, changes in the strategic landscape and advances in technology and operational doctrine by potential adversaries are calling the medium armor concept back into question.

Medium armor faces the same conundrum that currently confronts the U.S. Army in general: should it optimize to conduct wide area security operations (which is the most likely type of future conflict) or combined arms maneuver (the most dangerous potential future conflict), or should it continue to hedge against strategic uncertainty by fielding a balanced, general purpose force which does a tolerable job of both, as it does now?

The Problem

In the current edition of Military Review, U.S. Army Captain Matthew D. Allgeyer presents an interesting critique of the Army’s existing medium-weight armor concept. He asserts that it is “is suffering from a lack of direction and focus…” Several improvements for the Stryker have been proposed based on perceptions of evolving Russian military capabilities, namely “a modern heavy-force threat supported by aviation assets.” The problem, according to Allgeyer, is that

The SBCT community wants all the positive aspects of a light force: lower cost, a small tooth-to-tail ratio, greater operational-level speed, etc. But, it also wants the ability to confront a heavy-armored force on its own terms without having to adopt the cost, support, and deployment time required by an armored force. Since these two ideas are mutuality exclusive, we have been forced to adopt a piecemeal response to shortcomings identified during training and training center rotations.

Even if the currently proposed improvements are adopted however, Allgeyer argues that updated Strykers would only provide the U.S. with a medium weight armor capability analogous to the 1960’s era Soviet motor-rifle regiment, a doctrinal step backward.

Allgeyer identifies the SBCT’s biggest weaknesses as a lack of firepower capable of successfully engaging enemy heavy armor and the absence of an organic air defense capability. Neither of these is a problem in wide area security missions such as peacekeeping or counterinsurgency, where deployability and mobility are priority considerations. However, both shortcomings are critical disadvantages in combined arms maneuver scenarios, particularly against Russian or Russian-equipped opposing forces.

Potential Solutions

These observations are not new. A 2001 TDI study of the historical effectiveness of lighter-weight armor pointed out its vulnerability to heavy armored forces, but also its utility in stability and contingency operations. The Russians long ago addressed these issues with their Bronetransporter (BTR)-equipped motor-rifle regiments by adding organic tank battalions to them, incorporating air defense platoons in each battalion, and upgunning the BTRs with 30mm cannons and anti-tank guided missiles (ATGMs).

The U.S. Army has similar solutions available. It has already sought to add 30mm cannons and TOW-2 ATGMs to the Styker. The Mobile Protected Firepower program that will provide a company of light-weight armored vehicles with high-caliber cannons to each infantry brigade combat team could easily be expanded to add a company or battalion of such vehicles to the SBCT. No proposals exist for improving air defense capabilities, but this too could be addressed.

Allgeyer agrees with the need for these improvements, but he is dissatisfied with the Army “simply reinventing on its own the wheel Russia made a long time ago.”  His proposed “solution is a radical restructuring of thought around the Stryker concept.” He advocates ditching the term “Stryker” in favor of the more generic “medium armor” to encourage doctrinal thinking about the concept instead of the platform. Medium armor advocates should accept the need for a combined arms solution to engaging adversary heavy forces and incorporate more joint training into their mission-essential task lists. The Army should also do a better job of analyzing foreign medium armor platforms and doctrine to see what may be appropriate for U.S. adoption.

Allgeyer’s proposals are certainly worthy, but they may not add up to the radical restructuring he seeks. Even if adopted, they are not likely to change the fundamental characteristics of medium armor that make it more suitable to the wide area security mission than to combined arms maneuver. Optimizing it for one mission will invariably make it less useful for the other. Whether or not this is a wise choice is also the same question the Army must ponder with regard to its overall strategic mission.

Back to the Future

The opening sentence of an article by Dan Goure caught my attention: “Every decade of so since the 1960s, the U.S. Army creates a requirement for what can nominally be described as a light tank.” The article is here: http://nationalinterest.org/blog/the-buzz/its-back-the-future-mobile-protected-firepower-20539?page=show

It reminds me of a meeting we had in late 2000 with Walt Hollis, Deputy Under Secretary of the Army (Operations Research). He started the meeting by telling us that something like “Every now and then, someone seems to want to bring back the light tank.” He then went on to explain that these requirements are being pushed from the top (meaning by the Chief of Staff of the Army) and they should probably have a study done on the subject. He then asked us to do such an effort.

We did and it is here: http://www.dupuyinstitute.org/pdf/mwa-2lightarmor.pdf

We decided to examine the effectiveness of lighter-weight armor based upon real-world experience in six possible scenarios:

  1. Conventional conflicts against an armor supported or armor heavy force.
  2. Emergency insertions against an armor support or armor heavy force.
  3. Conventional conflict against a primarily infantry force (as one might encounter in sub-Saharan Africa).
  4. Emergency insertion against a primarily infantry force.
  5. A small to medium insurgency (includes an insurgency that develops during a peacekeeping operation).
  6. A peacekeeping operation or similar Operation Other Than War (OOTW) that has some potential for violence.

Anyhow, I am not going to summarize the report here as that would take too long. I did draft up a chapter on it for inclusion in War by Numbers, but decided to leave it out as it did not fit into the “theory testing” theme of the book. Instead, I am holding it for one of my next books, Future American Wars.

The interesting aspect of the report is that we were at a meeting in 2001 at an Army OR outfit that was reviewing our report, and they told us that the main point of action they drew from the report was that we needed to make sure our armor vehicles were better protected against mines. As our report looked at the type of tank losses being suffered in the insurgencies and OOTWs, there were a lot of vehicles being lost to mines. Apparently they had not fully realized this (and Iraq did not occur until 2003).