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Military Theorists of the American Civil War Era


Summary. The primary influence on the military art in the 19th century was the accomplishment of Napolean Bonaparte. At the conclusion of the Napoleanic wars, there began a debate of what had occurred which is still not concluded to the modern day. This debate spawned a number of treatises and individuals who devoted their professional careers to analyzing what had occurred. The two most famous theorists of the era, Baron Antoine Henri Jomini and Karl von Clausewitz, had opposing views in this debate. The American military community subscribed to the teachings of Jomini and used his last work, The Art of War, as the basis for the coursework at the U.S. Military Academy.

In the spirit of better role-play in our email traffic in CWOL, the following summary of the theory and terms of Baron Henri Jomini is offered. It is intended that this listing serve as a "time capsule" in giving the players of CWOL a creditable reference to use as the basis for terms and concepts of the ACW era.

Background. The prominent influence on American military thought in the decade leading to the American Civil War was Baron Antoine Henri Jomini. While his rival, Karl von Clausewitz, has risen to prominence in the years since World War II, it is the writings of Napolean's Swiss general that dominated American military thought in the years of the Civil War era. His most famous work, The Art of War, was used as the text for classes in "Military Art & Thought" at West Point in the 1850s and afterward. Listed below are the most common terms and concepts that are contained in the works of Jomini.

Branch of the "art of war"

Definition

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Terms & Concepts

Extracts from text
Strategy art of directing masses (of troops) in the theater of war  
  • theater of war
  • decisive points
  • fixed base
  • zone of operations
  • objective point
  • strategic front
  • lines of operations
  • strategic reserves
  • marches of the army {maneuver}
  • depots
  • diversions
  • great detachments

Jomini's fundamental maxims of war:

1- by strategic movement throw the mass of the army on the decisive points of a theater of war;

2- engage fractions of the enemy with the bulk of one's army;

3- in battle, throw the mass of forces on the decisive point that is first importance;

4- in battle, arrange forces so they shall engage the decisive point at the proper time & with energy

Branch of the "art of war"

Definition

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Extracts from text
Grand Tactics Maneuver of an army on the battlefield     Grand Tactics - "bring the mass of force in hand against part of the opposing army to gain ... most important results"
    formulation of a plan prior to battle
  • positions
  • line of battle (defensive)
 
      "an arrangement of troops indicating an intention to execution a certain maneuver ..."
     
  • "offensive - defensive"
"a general may employ in his battles ... either the offensive or defensive system ... (not) limit himself to passive defense, he should know how to take the offensive at favorable moments ... that he strike his blows upon decisive points"
    making good combinations (of decisions) during battle
  • unexpected battles
  • attack of positions
  • coup de main

 "two armies approach each other ... A collusion ensues unexpected by both armies, since each finds the other where it does not anticipate a meeting"

"bold enterprises undertaken by a detachment ... for the capture of posts of different strength or importance"


Branch of the "art of war"

Definition

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Extracts from text
Logistics the art of moving armies ..." comprises order and details of marches and camps; of quartering and supplying troops "    

"to be a good chief of staff, it became necessary that a man be acquainted with all the various branches of the art of war ... the term logistics includes all this ..."

"ordering and directing reconnaissance of every kind ... procuring ... exact information as possible of the positions and movements of the army"

    the march    "Napolean's system ... to march 25 miles a day, to fight, and then to camp in quiet"
    encampment    "directing the establishment of camps, and adopting regulations for their safety, good order, and police"
    lines of communication    "establishing and organizing ... lines of communications ... looking out for the safety of detachments and convoys, furnishing them good instructions, ... preserving suitable means of communication of the army with its base ..."

Branch of the "art of war"

Definition

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Terms & Concepts

Extracts from text
Tactics "art of posting troops upon the battlefield according to the accidents of the ground, of bringing them into action, and the art of fighting on the ground ..."  
  • intrenched positions
  • natural positions
  • open positions
  • lines of battle
  • orders of battle
  • coup-d'oeil

 Tactical positions have:

  • communications to front to ease offensive action
  • enable artillery to use full effect in defense
  • lateral movement routes between the wings
  • unobstructed line of retreat
  • natural or artificial protection of flanks
     
  • decisive point(s)
Decisive point on the battlefield is determined by features on the ground, relation to ultimate strategic aim, positions of forces of both sides
    Infantry

offensive characteristics:

  • solidity
  • mobility
  • momentum

defensive characteristics:

  • solidity
  • as much fire as possible

 "infantry is undoubtedly the most important arm of the service"

"shall the line of battle consist of deployed battalions depending chiefly upon their fire, or columns of attack ... depending on its force and impetuosity ?"

    Artillery
  • "great battery"

 Rules for employment:

  • "... in offensive, artillery should concentrate its fire upon the point where a decisive blow is to be struck."
  • "half of horse artillery should be held in reserve ... rapidly moved to any required point"
  • "along the defensive line ...give their attention to those points where the enemy would most likely to approach"
  • "chief office of all artillery in battles is to overwhelm the enemy's troops and not to reply to their batteries "
  • "the surest means of using artillery to best advantage is to place in command a general who is at once a good strategist and tactician "
     Cavalry
  • ensemble of the operation

"principal value of cavalry is derived from its rapidity and ease of motion"

 "cavalry can never defend a position without infantry"

"in open country ... an army should contain one sixth of its whole strength in cavalry ..."

     
  • Dragoon
"to make cavalry (dragoons) out of foot soldiers is very difficult ..."

Branch of the "art of war"

Definition

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Terms & Concepts

Extracts from text
Engineer "the Art of the Engineer ... is a special branch of military science ..."      "The art of building military bridges ... is committed to pontoniers or sappers ... I consider the passage of a stream ... as a maneuver"
    Fortresses
  • Tetes de ponts
  • detours (an army's march)

Forts - "cover the frontier; ... aid the operations of the campaign"

"fortified places should be in echelon, on 3 lines, and should extend from the frontiers toward the capitol"

"fortresses should always occupy decisive points in a theater of war"

    Intrenchments   "a system of intrenched lines (is) absurd ... to bury an army in intrenchments, where it may be outflanked and surrounded ... is manifest folly"
    Passage of Rivers
  • strategic point of passage
  • geographic decisive points
  • double passage

"general rules to be observed ..."

"1. It is essential to deceive the enemy as to the point of passage ..."

"2. Construction of a bridge should be covered by troops (on the opposite bank)..."

"3. ... silence any artillery the enemy might bring up"


Jomini's Orders of Battle (Grand Tactical & Tactical Schemes).

Note. The following diagrams are reproductions of the sketches in Jomini's "Art of War." These maneuver concepts are generic in nature in that they can be applied as the overall maneuver of a force in a single battle (grand tactics) or be used by subordinate elements of a force during the battle. These drawings are provided as listings of the titles of the maneuver concepts employed in the ACW (the "oblique order" below was used by Longstreet on the 2d day at Gettysburg) as well as a means to convey the maneuver concepts for possible use in CWOL.






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