PCA meaning in Military and Defence ?

Answer:

What is Posse Comitatus Act mean?

The Posse Comitatus Act is a United States federal law (18 U.S.C. § 1385, original at 20 Stat. 152) signed on June 18, 1878, by President Rutherford B. Hayes which limits the powers of the federal government in the use of federal military personnel to enforce domestic policies within the United States. The Act was passed as an amendment to an army appropriation bill following the end of Reconstruction and was updated in 1956 and 1981.

The Act specifically applies only to the United States Army and, as amended in 1956, the United States Air Force. Although the Act does not explicitly mention the United States Navy or the United States Marine Corps, the Department of the Navy has prescribed regulations that are generally construed to give the Act force with respect to those services as well. The Act does not prevent the Army National Guard or the Air National Guard under state authority from acting in a law enforcement capacity within its home state or in an adjacent state if invited by that state's governor. The United States Coast Guard (under the Department of Homeland Security) and United States Space Force (under the Department of the Air Force) are not covered by the Act either, primarily because although both are armed services, they also have maritime and space law enforcement missions respectively.

The title of the Act comes from the legal concept of posse comitatus, the authority under which a county sheriff, or other law officer, can conscript any able-bodied person to assist in keeping the peace.

reference

Full Form	Category
Portsmouth Christian Academy	Academic & Science
Pacific Coast Academy	Academic & Science
Professional Computer Association of Lebanon	Academic & Science
Priority Collection Action	Accounts and Finance
Portage Creek (ak)	Airport Code
Prompt Corrective Action	Banking
Partnership and Cooperation Agreement	Business
Production Code Administration	Business
Palace Capital	Business
Performance Consulting Associates	Business
Painting Contractors Association	Business
Phone Card of America	Business
Professional Communication Association	Business
Plumbing Contractors of America	Business
Philadelphia Corporation For Aging	Business
Practitioner Certified Assitant	Certifications
Pyrrolidone Carboxylic Acid	Chemistry
Publication Consistency Assumption	Community
Phoenix Community Alliance	Community
Prestonwood Christian Academy	Community
Providence Christian Academy	Community
Prescott Center for the Arts	Community
Pennsylvania Chiropractic Association	Community
Pine Chemicals Association	Community
Professional Cowboy Association	Community
Premium Cigar Association	Community
Presbyterian Church in America……new	Community
Primary Care Associations	Community
Paris College of Art	Community
Physical Culture Association	Community
Pittsburgh Center for the Arts	Community
Popular Culture Association	Community
Porsche Club of America	Community
Promotion Committee Of Armageddon	Community
Presbyterian Church in America	Community
Petaluma Community Access	Community
Poodle Club of America	Community
Parish Center for the Arts	Community
Portland Cement Association	Community
Poodles Club of America	Community
Password Call Acceptance	Computer and Networking
Policy Group proposal on CA	Computer and Networking
Programmable Counter Array	Computer Assembly Language
Power Controller Assembly	Computing
Principle Component Analysis	Computing
Performance and Coverage Analyzer	Computing
Personal Internet Client Architecture	Computing
Page Control Area	Computing
Protection Channel Access	Computing
Pc Answers	Computing
Private Cloud Appliance	Computing
Parallel Channel Adapter	Computing
Personal Communications Attendant	Computing
Policy Certification Authority	Computing
Program Compatibility Assistant	Computing
Probabilistic Cellular Automata	Computing
Police Complaints Authority	Delhi Government
Printed Circuit Assembly	Electronics
Processor Controlled Amplitude	Electronics
Posterior Cortical Atrophy	General
Principal Component	General
Purchasing Cooperative of America	General
Progenitor Cell Activation	General
Personal Customer Agent	General
Power Calibration Area	General
Post Construction Availability	General
Patch Check Advanced	General
Prellwitz Chilinski Associates	General
Principal Components Analysis	General
Permanent Change of Assignment	General
Per Curiam Affirmed	General
Pacific Commercial Advertiser	General
Pro Camera Accessories	General
PokerStars Caribbean Adventure	General
Pennsylvania Current Area	General
Porsche Cars Australia	General
Peugeot Citroen Automobile	General
Polymer Coated Aramid	General
Peugeot Citroen Argentina	General
Personal Care Account	General
Pre Crash Algorithm	General
Physical Configuration Audits	General
Proton Cars Australia	General
Pre Crash Actions	General
Perception Cognition and Action	General
Peugeot Connect Assistance	General
Peugeot Connect Apps	General
Principa components Analysis	General
Pajero Club Azerbaijan	General
Primary Care Associates	General
Philadelphia Corvair Association	General
Program Commit Agreement	General
Pre Crash Alert	General
Pre Collision Assist	General
Driving with a Prescribed Concentration of Alcohol	General
Peugeot Citroen Australia	General
Pierre Cardin Auto	General
Parking Collision Avoidance Assist	General
Periodic Commuting Arrangement	General
Porsche Centre Ahmedabad	General
Pressure Compensating Aerator	General
Performance Coach Award	General
Primary Correlation Analysis	General
Power Cost Adjustment	General
Professional Chess Association	General
Partial Clarity Analysis	General
Pastoral Care Area	General
Pony Club Association	General
Propulsion Controlled Aircraft	General
Program Cost Account	General
The Plane Continuum Approximation	General
Patient Controlled Analgesic	General
Polymer Cased Ammunition	General
Patient Controlled Anaesthesia	General
Pyloric Carcinoma And	General
Presumptuous Calculated Assumptions	General
Pluggable Composite Adapter	General
Physical (Product) Configuration Audit	General
Prescribed Concentration of Alcohol	General
Pen Collectors of America	General
Patient Care Assistant	General
Power Cost Adjustments	General
People's Choice Awards	General
Personal Care Assistance	General
Panama Canal Authority	Governmental
Physicians Care Alliance	Governmental
Permanent Court of Arbitration	Governmental
Public Contracts Act	Governmental
PA Council on the Arts	Governmental
Pedestrian Crosswalk Ahead	Governmental
Positive Control Airspace	Governmental
Partido Comunista Andaluz	Governmental
Partido Comunista de Aragón	Governmental
Partido Comunista de Asturias	Governmental
Per Capita Apportionment	Governmental
Pro-Children Act of 1994 (PL 103-227)	Governmental
Positive Coaching Alliance	Governmental
Pennsylvania Council on the Arts	Governmental
Pollution Control Agency	Governmental
Proyectos Comunitarios Abaj	International
Physician Care Assistant	Jobs
Personal Care Assistant	Jobs
Personal Care Aide	Jobs
Personal Care Associate	Jobs
Pest Control Advisor	Jobs
Personal Care Attendant	Jobs
Principal Component Analysis	Maths
pancreatic cancer	Medical
Parietal Cell Antibody	Medical
Patient Choice Advisor	Medical
Percutaneous Carotid Arteriogram	Medical
Peripheral Circulatory Assist	Medical
Posterior Cerebral Artery	Medical
Posterior Communication Artery	Medical
Postcoronary [Cardiac] Arrest	Medical
Patient Controlled Analgesia	Medical
Post Conceptual Age	Medical
Patient Controlled Anesthesia	Medical
Posterior Crico Aritenoid	Medical
Prostate Cancer Archive	Medical
Primary Care Association	Medical
Project Co-operation Agreement	Messaging
Posse Comitatus Act	Military and Defence
Personal Combat Armor	Military and Defence
Penetrator Core Ammunition	Military and Defence
Powered Combat Armor	Military and Defence
Protected Cropping Australia	Regional
Portage Creek, Alaska USA	Regional
Physical Configuration Audit	Softwares
Payload Clamp Assembly	Space Science
Pitch Control Assembly	Space Science
Pneumatic Control Assembly	Space Science
Point of Closest Approach	Space Science
Power Control Assembly	Space Science
Primer Carrier Assembly	Space Science
Primer Chamber Assembly	Space Science
Pyrotechnic Carrier Assembly	Space Science
Pitch Change Axis	Space Science
Protective Connecting Arrangement	Telecommunication