 Army
 Navy
 Marines
 Air
Force
 Coast Guard
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Army - responsible for land-based Military
operations.
largest and oldest established branch of the U.S.
military
 its roots in the Continental Army which was formed
on 14 June 1775
 before establishment of the United States, to meet the
demands of the American Revolutionary War
 Congress created the United States Army on 14 June
1784 after the end of the war to replace the
disbanded Continental Army
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primary mission of the Army –
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is to "provide necessary forces and capabilities ... in support of
the National Security and Defense Strategies” 1
Department of the Army administers control and operation
Civilian leader is Secretary of the Army
Highest ranking military officer is the Chief of Staff, unless
Chairman/Vice-Chairman of the Joint Chiefs of Staff are Army
officers
http://www.army.mil/leaders/
The Regular Army reported a strength of 539,675 soldiers; the
Army National Guard (ARNG) reported 360,351 and the
United States Army Reserve (USAR) reported 197,024 putting
the combined component strength total 1,097,050 soldiers (2008
Financial Year). 2008 Statistics
1 - 2005 Posture Statement. U.S. Army, February 6, 2005
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§3062 of Title 10 US Code defines the purpose of the
Army as:2
2 - DA Pamphlet 10-1 Organization of the United States Army; Figure 1.2 Military Operations.
http://www.rleeermey.com/soundclips.php
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Navy – is the sea branch of the U. S. Armed
Forces
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Origins traced back to Continental Navy
The United States Constitution provided the legal
basis for a seaborne military force by giving
Congress the power "to provide and maintain a
navy".
Barbary Coast pirates in the Mediterranean Sea
enabled Congress to pass the Naval Act of 1794,
ordering the construction and manning of six
frigates.
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Administered by Department of the Navy
Civilian leader is the Secretary of the Navy
Navy is a division of the Department of Defense,
headed by the Secretary of Defense
Highest ranking Naval officer is the Chief of Naval
Operations http://www.navy.mil/navydata/bios/bio_list.asp
As of December 2008, the U.S. Navy had about
331,682 personnel on active duty and 124,000 in the
Navy Reserve. It operates 283 ships in active service
and more than 3,700 aircraft
U.S. Navy is largest in the world.
World’s largest carrier group (11 in service +1)
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The mission of the Navy is to maintain, train and equip combat-ready
Naval forces capable of winning wars, deterring aggression and
maintaining freedom of the seas.
—Mission statement of the United States Navy
Navy's three primary areas of responsibility:
 "The preparation of naval forces necessary for the effective
prosecution of war"
 "The maintenance of naval aviation, including land-based naval
aviation, air transport essential for naval operations and all air
weapons and air techniques involved in the operations and activities
of the Navy"
 "The development of aircraft, weapons, tactics, technique,
organization, and equipment of naval combat and service elements".
 U.S. Navy training manuals state the mission of the U.S armed forces
is "to prepare and conduct prompt and sustained combat operations in
support of the national interest". As part of that establishment, the U.S.
Navy's functions comprise sea control, power projection and nuclear
deterrence, in addition to "sealift" duties (10 U.S.C. § 5062)
http://www.rleeermey.com/soundclips.php
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Marines - for providing force projection from
the sea, using the mobility of the U.S. Navy to
rapidly deliver combined-arms task forces
Component of the Department of the Navy
 Formed by Captain Samuel Nicholas, two battalions
of Continental Marines, on 10 November 1775 in
Philadelphia as naval infantry
 Has served in every armed conflict
 Because most known for amphibious warfare.
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 formed the cornerstone of the Pacific campaign of
World War II
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Marine Corps includes 203,557 (as of June 30, 2009)
active duty Marines and just under 40,000 reserve
Marines
It is the smallest of the United States' armed forces in
the Department of Defense (but still larger than
entire British Army.
Commandant of the Marine Corp is General James T.
Conway (http://www.marines.mil/units/hqmc/cmc/Pages/default.aspx)
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As outlined in 10 U.S.C. § 5063 and as
originally introduced under the National
Security Act of 1947, has three primary areas of
responsibility:
"The seizure or defense of advanced naval bases and
other land operations to support naval campaigns;
 The development of tactics, technique, and
equipment used by amphibious landing forces; and
 Such other duties as the President may direct."
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Air Force - is the aerial warfare branch of the
U.S. armed forces
Initially part of the U.S. Army, the USAF was formed
as a separate branch of the military on 18 September
1947
 largest and most technologically advanced Air Force
in the world
 5,573 manned aircraft in service (3,990 USAF; 1,213
Air National Guard; and 370 Air Force Reserve;
approximately 180 unmanned combat air vehicles,
2,130 air-launched cruise missiles, and 450
intercontinental ballistic missiles
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327,452 personnel on active duty, 115,299 in the
Selected and Individual Ready Reserves, and 106,700
in the Air National Guard as of Sept. 2008
The Department of the Air Force is headed by the
civilian Secretary of the Air Force who oversees all
administrative and policy affairs.
The Department of the Air Force is a division of the
Department of Defense, headed by the Secretary of
Defense. (http://www.af.mil/information/afchain/index.asp)
The highest ranking military officer in the
Department of the Air Force is the Chief of Staff of
the Air Force.
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According to the National Security Act of 1947 (61 Stat. 502) which
created the Air Force:
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In general the United States Air Force shall include aviation forces both combat
and service not otherwise assigned. It shall be organized, trained, and equipped
primarily for prompt and sustained offensive and defensive air operations. The Air
Force shall be responsible for the preparation of the air forces necessary for the
effective prosecution of war except as otherwise assigned and, in accordance with
integrated joint mobilization plans, for the expansion of the peacetime components
of the Air Force to meet the needs of war.
§8062 of Title 10 US Code (10 USC 8062) defines the purpose of the Air
Force as:
 to preserve the peace and security, and provide for the defense, of the United
States, the Territories, Commonwealths, and possessions, and any areas occupied
by the United States;
 to support national policy;
 to implement national objectives;
 to overcome any nations responsible for aggressive acts that imperil the peace
and security of the United States.
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The stated mission of the USAF today is to "fly, fight, and win in air, space,
and cyberspace".
http://lcweb2.loc.gov/diglib/ihas/loc.natlib.ihas.100010443/default.html
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Coast Guard – is a military, maritime, multimission service within the U.S. Department of
Homeland Security dedicated to protecting the
safety and security of America.
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In addition, the Coast Guard has separate legal
authority than the other four armed services.
A federal regulatory agency mission as part of its
mission set.
Operates under the Department of Homeland
Security during peacetime, and can be transferred to
the Department of the Navy by the President or
Congress during a time of war.
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Founded by Alexander Hamilton as the Revenue
Cutter Service on 4 August 1790, it lays claim to
being the United States' oldest continuous seagoing
service.
As of October 2006, the Coast Guard had
approximately 46,000 men and women on active
duty, 8,100 reservists, 7,000 full time civilian
employees and 30,000 Auxiliarists
The service has participated in every U.S. conflict
from 1790 through today, including landing US
troops on D-Day and on the Pacific Islands in World
War II
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is unique among the military branches in that it has a
maritime law enforcement mission (with jurisdiction
both domestically and in international waters)
best known for search and rescue missions
has law enforcement powers
Highest civilian lead is the Secretary of the
Department of Homeland Security
(http://www.dhs.gov/xabout/structure/gc_1232568253959.shtm)
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Highest military leader is Commandant of the
United States Coast Guard
(http://www.uscg.mil/top/leaders.asp)
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overall mission of the Coast Guard is to protect the
public, the environment, and the United States
economic and security interests in any maritime
region in which those interests may be at risk,
including international waters and United States
coasts, ports, and inland waterways.
The Coast Guard motto is "Semper Paratus", Latin for
"Always Ready" or "Always Prepared".