SECRET

JOINT ARMY AND NAVY BASIC INTERVENTION PLAN, TAN

SECTION I.

SITUATION.

1. PURPOSE OF THE PLAN.

The Joint Army and Navy Basic Intervention Plan, TAN, has for its purpose the most effective employment of the Army and Navy forces of the United States in an intervention in CUBA, undertaken under the provisions of the Treaty between the United States and CUBA, which was proclaimed July 2, 1904. Upon this Joint Plan will be based all Army Plans, TAN, all Navy Plans, TAN, and all Joint Plans, TAN.

2. ASSUMPTIONS.

a.  Due to unsatisfactory conditions existing in CUBA, the President of the United States has decided to intervene, in accordance with existing Treaty rights, in one of the following ways:

(1) Variation A.
Intervention without military support.

(2) Variation B.
Establishment of a Provisional Government with military support.

b.  The situation in CUBA is such that serious organized resistance to intervention is not anticipated.

c.  Nothing in the international situation indicates that the intervention will be opposed by any foreign power.

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d. The operations will be initiated without a declaration of war.

SECTION II.

DECISION.

      1. NATIONAL MISSION.

While protecting United States and other foreign interests in the Republic of CUBA, to intervene in that country for the purpose of preserving CUBAN independence and maintaining a government adequate for the protection of life, property, and individual liberty, either without military support, or with military support, as may be directed by the President.

      2. ARMY MISSION.

To establish a stable and efficient Government in the Republic of CUBA, either without military support (Variation A), or with military support (Variation B), as may be directed by the President; and to protect United States and other foreign interests in the Republic of CUBA.

      3. NAVY MISSION.

To extend to United States and other foreign interests in CUBAN seaports such protection as may be required prior to the arrival of Army forces; to support and assist the landing of Army forces in CUBA; and, thereafter, to cooperate with the Army in the execution of the Army Mission and to render such assistance to the Army as may be requested by the Commanding General, American Intervention Force.

      4.  THEATERS OF OPERATIONS.

Under Variation B, Theaters of Operations are defined as follows:

a. For the Army:
All CUBAN Territory, exclusive of the area included within the limits of the U. S. Naval Station, Guantanamo Bay.
b. For the Navy:
All sea areas adjacent to the coasts of CUBAN territory, and the area included within the limits of the U. S. Naval Station, Guantanamo Bay.

      5.  TIME ORIGINS.

M-DAY is the first day of open mobilization and is the time origin for the execution of this JOINT ARMY AND NAVY BASIC INTERVENTION PLAN, TAN. M-DAY will be determined for each service by the War and Navy Departments respectively. Army M-DAY and Navy M-DAY may not necessarily coincide.

SECTION III.

PLAN.

      1. UNDER VARIATION A.

In accordance with the National Mission, under Variation A, U. S. Army and Navy officers will serve as advisers to, or, if necessary, as replacements for, CUBAN officials; the officers required for these duties being furnished by the War Department, and by the Navy Department upon request of the War Department.

      2. UNDER VARIATION B.

a. Provisional Governor.

In accordance with the National Mission, the Provisional Governor, who will be appointed by the President of the United States under Variation B, and who may or may not be the Commanding General, American Intervention Force, has the following tasks:

(1) To establish a Provisional Government in CUBA for the maintenance of good order and the restoration of the financial standing of the CUBAN Government.

(2) To use American forces for the preservation of law and order only when the civil and military agencies of the CUBAN Government are unable to cope with the situation.

b. Army Tasks.

In accordance with the Army Mission, under Variation B, the Army tasks are as follows:

(1) By the War Department:

(a) To furnish Army officers, as indicated under Variation A (see Section III, paragraph 1, above), for duty with the Provisional Government.

(b) To send to CUBA for the support of the Provisional Government an American Intervention Force (A.I.F.) of such strength as may be required initially to support that Government; and to be prepared to augment this initial force upon request of the Provisional Governor.

(c) To provide the sea transportation for all Army forces to be employed in CUBA..

(2) By the Commanding General, A.I.F.:

(a) If not designated Provisional Governor, to report to the latter at the earliest opportunity and to conduct the operations of his forces in support of the Provisional Government in accordance with the instructions of the Provisional Governor.

(b) To make every effort to establish friendly relations with the CUBAN population and to prevent clashes between American forces and the natives of CUBA.

c. Navy Tasks.

In accordance with the Navy Mission, under Variation B, the Navy tasks are as follows:-

(1)  By the Navy Department:

(a) To furnish Navy officers upon request of the War Department, as indicated under Variation A (see Section III, paragraph 1, above), for duty with the Provisional Government.

(b) To send to CUBAN waters such Naval forces as may be required to carry out the Navy Mission.

(2) By Naval Forces:

(a) To extend to United States and other foreign interests in CUBAN seaports such protection as may be required prior to the arrival of Army forces in CUBAN territory.

(b) To render such support and assistance to Army forces while landing in CUBAN territory as may be required.

(c) After the arrival of Army forces in CUBAN territory , to extend to United States and other foreign interests in CUBAN seaports such protection by the Naval forces afloat as may be required; and such protection by Naval forces (including Marine Corps) ashore as may be requested by the Commanding General, American Intervention Force.

(d) To maintain observation of CUBAN waters, particularly those adjacent to CUBAN seaports.

(e) To prevent the importation of munitions of war by factions hostile to the Provisional Government of CUBA.

(f ) To cooperate with the Army in the execution of the Army Mission and to render such additional assistance to the Army as may be requested by the Commanding General, American Intervention Force.

(g) To protect the U. S. Naval Station, Guantanamo Bay.

      3. FORCES.

a. Army. Under Variation B, the American Intervention Force initially will consist of approximately one infantry division at peace strength plus certain auxiliary troops. The War Department will be prepared to augment this initial force, upon request of the Provisional Governor, by another infantry division at peace strength plus certain auxiliary troops.
b. Navy. Under Variation B, the Navy Department will make available such Naval Forces as may be required to accomplish the Navy Mission.

      4. ARMY PLANS.

The War Department shall have prepared the following plans:

a. All plans covering the mobilization, organization, equipment, supply, transportation, and evacuation of the Army Forces required to accomplish the Army Mission.
b. Plans for the rehabilitation of the CUBAN Government under Variation A, and for the establishment of the Provisional Government of CUBA under Variation B.

      5. NAVY PLANS.

a. The Navy Department shall have prepared all plans covering the mobilization, organization, equipment, supply, transportation, and employment of such Naval Forces as may be required to accomplish the Navy Mission.
b. The Navy Department also shall furnish such assistance as may be required by the War Department in preparing plans for the rehabilitation of the CUBAN Government under Variation A, and for the establishment of the Provisional Government of CUBA under Variation B.

SECTION IV.

COMMAND.

      1. ARMY THEATER OF OPERATIONS,

Command within the Army Theater of Operations will be exercised by the Commanding General, American Intervention Force. This will include command of all Army and of all Naval Forces (including Marine Corps Forces) ashore within that Theater after the arrival of the Commanding General, A.I.F., in CUBAN territory, whether operating as part of joint forces or otherwise.

      2. NAVY THEATER OF OPERATIONS.

Command within the Navy Theater of Operations will be exercised by the Commander-in-Chief, United States Fleet, except as otherwise provided hereinafter.

a. Command of joint forces of the Army and Navy, or Marine Corps, operating within the Navy Theater of Operations will be vested in the Army under the Principle of Paramount Interest.
b. Command of Army forces while being transported through the Navy Theater between the United States and CUBAN territory will be exercised by the Commanding General, American Intervention Force.